FREE
Image converter
Convert images to WebP, JPEG or PNG, or make the file smaller.
Explore toolsAdd image border
Add a solid-color outer border to your image.
How to use
- Choose an image to edit
- Apply and preview
- Download PNG
Add image border
Add a solid-color outer border to your image. Adds 0–512 pixels on each side; output dimensions grow. Original transparent pixels stay transparent. Output also obeys the image size limits. Downloads PNG without metadata.
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QR code generator
Enter a link or short text, then download and share your QR code.
Your QR code will appear here
FREE
Word counter
Instantly check word count, character count and reading time.
0Words
0Characters
0 snRead time
FREE
Color converter
Switch easily between HEX, RGB and HSL values.
RGB21, 92, 66
HSL159, 63%, 22%
Preview#155C42
FREE
Uppercase and lowercase text converter
Switch text between uppercase and lowercase using the selected language's rules.
FREE
Duplicate text line remover
Remove repeated lines of text. Keep each first text line unchanged and in its original position. Keep only one empty line.
Removed text lines: 0
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Alphabetical text line sorter
Sort lines using the selected language's alphabet. Numbers sort naturally: 2 before 10. Empty lines are preserved.
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Find and replace text
Replace every exact, case-sensitive occurrence of plain text. Replacement text is literal; no regular expressions.
Up to 100,000 input characters. Search/replacement: up to 10,000 characters. Results are limited to 1,000,000 characters.Explore toolsFREE
Compare texts
Compare two texts line by line and see added, removed and unchanged lines. Case and spaces matter.
Up to 500 lines and 100,000 characters per text. CRLF/CR line endings are treated as LF. Differences are shown by whole lines, not individual characters.Added lines (+) · Removed lines (−)
FREE
Add line numbers
Number each line, including empty lines. Choose a starting number and optional leading zeros.
Up to 10,000 lines and 100,000 input characters. Line endings become LF. A final line break creates an empty last line; empty input has no lines.Explore toolsFREE
JSON formatter
Validate, indent or minify JSON. Large numbers and duplicate object keys are preserved as written.
Explore toolsFREE
Base64 text encoder and decoder
Convert UTF-8 text to standard Base64 and back. This is text conversion, not encryption or binary file decoding.
Explore toolsFREE
URL component encoder and decoder
Encode or decode one URL value using percent encoding. A + stays a + when decoded; this is not form-data conversion.
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UUID v4 generator
Generate up to 100 random UUID v4 identifiers using your device’s Web Crypto random source.
Explore toolsFREE
SHA-256 text hash
Calculate the lowercase SHA-256 digest of UTF-8 text. Spaces and line breaks matter; this is not encryption or password storage.
SHA-256 is a one-way digest. Do not use a plain SHA-256 hash to store passwords.Explore toolsFREE
Unix timestamp converter
Convert Unix timestamps to UTC dates and UTC dates to timestamps. Choose seconds or milliseconds explicitly.
Explore toolsFREE
HTML entity encoder / decoder
Encode text as HTML entities or decode HTML5 character references. Results stay plain text and are never rendered as HTML.
Up to 100,000 input characters and 2,000,000 output characters. Decode applies once using HTML text-context rules; this is not an HTML sanitizer.Explore toolsFREE
JWT content viewer
Inspect the JSON header and payload of a three-part JWT locally. Encrypted five-part JWE tokens are not supported.
Signature NOT verified. Decoded claims may be forged; do not use this view to authenticate users or trust a token. No key is requested and no token is uploaded.
Up to 100,000 token characters. Requires Base64url-encoded UTF-8 JSON objects for header and payload. Decoding does not check expiration, issuer, audience or permissions.Explore toolsFREE
Number base converter
Convert signed integers between bases 2–36 without JavaScript floating-point rounding. Uses exact BigInt arithmetic.
Up to 4,096 digits, with an optional + or − sign. Use digits 0–9 and letters a–z; no prefixes (0x/0b), fractions or grouping separators. Negative results use a minus sign, not two’s complement.Explore toolsFREE
CSS minifier
Minify a stylesheet with CSSO, with structural rule restructuring disabled. CSS is processed as text and never applied to this page.
Up to 100,000 input and 2,000,000 output characters. Preserves /*! important comments */. Syntax support follows CSSO; review newer CSS syntax and the output in your target browsers.Explore toolsFREE
JSON to CSV
Convert an array of flat JSON objects into CSV. Columns follow first-seen key order; missing values and null become empty cells.
Up to 100,000 input and 2,000,000 output characters, 1,000 data rows, 100 columns and 10,000 data cells. CSV uses quoted fields and CRLF output. CSV input supports quoted delimiters, escaped quotes and multiline cells; rows must have equal width and headers must be nonempty and unique.Flat objects with string, number, boolean or null values only. Nested values, duplicate/empty keys and columnless rows are rejected. Numeric JSON spelling is retained; CSV does not preserve JSON types. All cells are quoted.Explore toolsFREE
CSV to JSON
Convert a header-based CSV table to JSON objects. Every cell stays a string, preserving leading zeros and large integer text.
Up to 100,000 input and 2,000,000 output characters, 1,000 data rows, 100 columns and 10,000 data cells. CSV uses quoted fields and CRLF output. CSV input supports quoted delimiters, escaped quotes and multiline cells; rows must have equal width and headers must be nonempty and unique.Explore toolsFREE
Slug generator
Turn a title into a readable URL slug.
Lowercase, accents removed, punctuation replaced with hyphens. Turkish letters are supported; other scripts stay in Unicode. Up to 100,000 characters.Explore toolsFREE
Reverse text
Reverse text while keeping emoji and combined characters together.
Reverses the entire text by visible character groups, including line order. Requires a browser with Intl.Segmenter. Up to 100,000 characters.Explore toolsFREE
Whitespace cleaner
Remove extra spaces and tidy text in one step.
Collapses whitespace and trims edges. Preserve line breaks to keep internal blank lines; turn it off for a single line. Up to 100,000 characters.Explore toolsFREE
Discount calculator
Calculate the sale price and how much you save.
Price from 0 to 1 trillion; discount from 0 to 100%. Results rounded to 2 decimals, in the same currency as your input. No tax or additional fees.Use a dot or comma for decimals, without thousands separators. Absolute input values up to 1 trillion. Proportion and travel results use up to 12 significant digits; maximum absolute result 1 quadrillion. Calculations are approximate.Explore toolsFREE
Proportion calculator
Find the missing value in A / B = C / D.
Leave exactly one field empty. B and D cannot be zero. Only a unique finite solution is accepted.Use a dot or comma for decimals, without thousands separators. Absolute input values up to 1 trillion. Proportion and travel results use up to 12 significant digits; maximum absolute result 1 quadrillion. Calculations are approximate.Explore toolsFREE
Speed, distance and time
Find one value using the other two and your preferred units.
Choose the value to find; its input is ignored. Uses constant average speed, without stops. Division by zero is not allowed. h = hours, min = minutes, s = seconds; mi = miles.Use a dot or comma for decimals, without thousands separators. Absolute input values up to 1 trillion. Proportion and travel results use up to 12 significant digits; maximum absolute result 1 quadrillion. Calculations are approximate.Explore toolsFREE
Reading time
Estimate reading time from a text and your reading speed.
Uses browser word segmentation, 80–1,000 words/minute and rounds up to whole seconds. An estimate, not a reading assessment. Up to 100,000 characters.Explore toolsFREE
Word frequency
Find the most frequent words in your text.
Top 100 words, case-insensitive with Unicode normalization. Uses the page language for segmentation and case conversion; includes common words and numbers. Up to 100,000 characters.Explore toolsFREE
Random list picker
Choose random entries from a list, one entry per line.
Blank lines are ignored and edges trimmed. Select 1–100 entries from up to 10,000 lines / 100,000 characters. Lines are selected without replacement; duplicate text on different lines can repeat. Uses browser cryptographic randomness.Explore toolsFREE
XML formatter
Validate and indent XML locally in your browser.
Up to 100,000 characters, 10,000 nodes and 100 levels. DTDs/entities are unsupported. Mixed content and xml:space are preserved; whitespace between element-only children is reindented. Not a schema validator or byte-preserving editor.Explore toolsFREE
URL parser
Inspect a web address without opening it.
Accepts absolute HTTP/HTTPS URLs up to 100,000 characters, without unescaped spaces. Query parameters keep duplicate entries. Credentials are omitted; encoded paths/fragments stay encoded. Nothing is fetched.Explore toolsFREE
Color contrast checker
Check text contrast between two opaque sRGB colors.
WCAG text contrast: AA normal 4.5:1 / large 3:1; AAA normal 7:1 / large 4.5:1. Large text: at least 18pt, or 14pt bold. Decisions use the unrounded ratio. Not a complete accessibility audit.WCAG · W3CExplore toolsFREE
Rotate PDF pages
Rotate every page or selected pages clockwise.
One PDF up to 50 MB and 200 pages. Encrypted, signed and form PDFs are not supported. The selected pages are saved in one new PDF; document-level features are not retained.Adds 90°, 180° or 270° clockwise to existing page rotation. Select all pages or enter ranges such as 1-3,5. Output copies page content; bookmarks, attachments and document metadata are not retained. Not a PDF sanitizer.Output pages: —
Explore toolsFREE
Reorder PDF pages
Arrange PDF pages in the exact order you choose.
One PDF up to 50 MB and 200 pages. Encrypted, signed and form PDFs are not supported. The selected pages are saved in one new PDF; document-level features are not retained.Enter every page exactly once, for example 3,1-2 for a 3-page file. Missing and duplicate pages are rejected. Bookmarks, attachments and document metadata are not retained. Not a PDF sanitizer.Output pages: —
Explore toolsFREE
Delete PDF pages
Remove selected pages and download a new PDF.
One PDF up to 50 MB and 200 pages. Encrypted, signed and form PDFs are not supported. The selected pages are saved in one new PDF; document-level features are not retained.Enter pages to remove, such as 1-3,5. At least one page must remain. The original file stays unchanged. Bookmarks, attachments and document metadata are not retained. Not a PDF sanitizer.Output pages: —
Explore toolsFREE
JSON to YAML
Convert JSON data into readable YAML.
Converts values, not original formatting. Duplicate JSON keys are rejected. Strings stay strings; comments and numeric spelling are not preserved.Each input: 100,000 characters, 10,000 value nodes, 100 levels. Output: 2 million characters. Integers beyond ±9,007,199,254,740,991 and numbers that would lose decimal precision are rejected.Explore toolsFREE
YAML to JSON
Convert a single YAML 1.2 document into JSON.
Supports core JSON-compatible values with string mapping keys. Anchors, aliases, merge expansion, custom tags, multiple documents and non-finite numbers are unsupported. Comments and formatting are discarded.Each input: 100,000 characters, 10,000 value nodes, 100 levels. Output: 2 million characters. Integers beyond ±9,007,199,254,740,991 and numbers that would lose decimal precision are rejected.Explore toolsFREE
JSON comparison
Compare JSON values and list structural differences.
Object key order is ignored; array order matters. Reports added, removed and changed values using JSON Pointer paths (empty path means root). Up to 1,000 differences; no partial result on overflow.Each input: 100,000 characters, 10,000 value nodes, 100 levels. Output: 2 million characters. Integers beyond ±9,007,199,254,740,991 and numbers that would lose decimal precision are rejected.Explore toolsFREE
Stopwatch
Measure elapsed time with start, pause and reset.
Shows tenths of a second; maximum just under 100 hours. Continues while the tab is open. Reloading or closing the page resets it. Background updates can be delayed.Explore toolsFREE
Pomodoro timer
Plan a focus session or a short break.
Focus 1–180 minutes, break 1–60 minutes. Start or pause the selected phase; completion stops the timer. Switch phases manually. Changing settings resets the timer. No sound or notifications; page reload resets it.Explore toolsFREE
Coin flip and dice
Flip a coin or roll a six-sided die.
Generates 1–100 independent draws using browser cryptographic randomness. Outcomes can repeat.Explore toolsFREE
Regex tester
Test a JavaScript regular expression against text.
JavaScript syntax; supported flags depend on your browser. Pattern up to 1,000 characters, text up to 100,000. Runs in a worker with about a 1-second timeout. Up to 1,000 matches / 2 million output characters. Indexes use UTF-16; no partial output on limit. Empty matches advance safely.Explore toolsFREE
HTML to Markdown
Convert basic HTML into Markdown text.
Up to 100,000 input characters / 2 million output characters. Supports headings, lists, links, quotes and code. Scripts, forms and styles are removed; images become alt text. Only absolute HTTP(S) links are retained. Tables and complex layouts may lose formatting. No resources are fetched.Explore toolsFREE
Markdown preview
Preview Markdown and copy the cleaned HTML.
Up to 100,000 characters, with about a 2-second parsing timeout. Cleaned HTML is shown in an isolated preview; scripts, styles, image loads and active links are disabled. GFM tables are supported; not every HTML feature is retained.Explore toolsFREE
Tip and bill split
Add a tip and divide the total equally.
Bill 0–1 trillion; tip 0–100%; 1–1,000 people. Uses the currency of your input. Results round to 2 decimals; rounded shares may not sum exactly to the total. No added tax. Use decimal dot/comma, without thousands separators.Explore toolsFREE
Fuel cost calculator
Estimate fuel used and trip cost.
Distance 0–1 billion km, consumption 0–1,000 L/100 km, price 0–1 million per liter. Cost uses your currency, capped at 1 quadrillion. Estimate excludes tolls and other costs; no live prices. Results round to 2 decimals. Decimal dot/comma accepted, no thousands separators.Explore toolsFREE
Add days to a date
Move a calendar date forward or backward.
Adds whole calendar days, including weekends. Positive and negative counts supported, up to ±3,652,058 days. Start and result must be within years 0001–9999. UTC arithmetic avoids daylight-saving shifts; result is YYYY-MM-DD.Explore toolsFREE
Combine images
Join images horizontally or vertically into one PNG.
Output dimensions: —
Explore toolsFREE
Blur image
Apply a soft blur and download a PNG.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Blur radius 0–50 pixels; keeps dimensions. Edges and transparency may soften. Requires Canvas filter support. Animated images use one frame; metadata is not copied.Output dimensions: —
Explore toolsFREE
Invert image colors
Create a color negative while keeping transparency.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Each RGB channel becomes 255 minus its original value. Alpha and dimensions stay the same. Downloads PNG; animated images use one frame, without copied metadata.Output dimensions: —
Explore toolsFREE
Flip image
Mirror an image horizontally, vertically or both.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Keeps the original dimensions and transparency. Downloads PNG; animated images use one decoded frame. Metadata is not copied.Output dimensions: —
Explore toolsFREE
Add image border
Add a solid-color outer border to your image.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Adds 0–512 pixels on each side; output dimensions grow. Original transparent pixels stay transparent. Output also obeys the image size limits. Downloads PNG without metadata.Output dimensions: —
Explore toolsFREE
Round image corners
Create transparent rounded corners and download PNG.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Radius 0–4,096 pixels, capped at half the shorter side. Preserves dimensions and cuts corners to transparency. Animated images use one frame; metadata is not copied.Output dimensions: —
Explore toolsFREE
Random password generator
Generate a password on your device using Web Crypto. At least one character from each selected group is included. Passwords are not stored.
Explore toolsFREE
Measurement unit converter
Convert length, mass, temperature, volume and speed. Gallons and fluid ounces use US liquid units. Results are rounded to 12 significant digits.
Use a decimal dot or comma; no thousands separators.Explore toolsFREE
Percentage calculator
Calculate a percentage of a value, a ratio or a percentage change. Change uses the absolute starting value; a zero baseline is undefined. Results use 12 significant digits.
Use a decimal dot or comma; no thousands separators.Explore toolsFREE
Age calculator
Calculate completed years and days since the last birthday on a chosen reference date. Dates are calendar dates, without time zones.
Years 0001–9999. The reference date must not precede birth. A 29 February birthday is treated as 28 February in non-leap years. This is a calendar calculation.Explore toolsFREE
Days between dates
Count calendar days between two dates, with an optional inclusive end date. Also see whole weeks and remaining days.
Calendar days, not elapsed 24-hour periods. The end date must not precede the start date. Same-day dates give 0 days, or 1 with the inclusive option.Explore toolsFREE
Countdown timer
Count down to a date and time in your device’s local time zone. The timer follows the actual clock instead of accumulating interval drift.
Uses your device’s clock and time zone. Non-existent daylight-saving times are rejected; repeated local times use the earlier occurrence. No background notification or alarm is scheduled, and closing the page stops the timer.—Days
—Hours
—Minutes
—Seconds
FREE
Image pixel resizer
Change image width and height in pixels, with optional aspect ratio locking. Preview and download a PNG on your device.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Choose an image to see a preview![Görsel boyutlandırıcı]()
Output dimensions: —
Explore toolsFREE
Image crop tool
Crop using pixel coordinates measured from the top-left corner, or choose a centered square. Preview and download a PNG.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Choose an image to see a preview![Görsel kırpıcı]()
Output dimensions: —
Explore toolsFREE
Image rotation and mirror tool
Rotate clockwise by 90, 180 or 270 degrees. Optional mirroring is applied to the original image before rotation. Download a PNG.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Choose an image to see a preview![Görsel döndürme ve aynalama]()
Output dimensions: —
Explore toolsFREE
Image watermark
Add a text watermark with adjustable position, size and opacity. Preview and download as PNG.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Up to 140 characters. Long text is fitted to the image. This is a visible watermark, not copy protection.
FREE
Image color palette
Extract up to six dominant colors from a sampled image. Copy HEX codes or download the palette.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Approximate colors from a sample of up to 256 × 256 pixels. Mostly transparent pixels are ignored.FREE
Image to Base64
Convert an original JPEG, PNG or WebP file into a data URL. Metadata is preserved; Base64 is not encryption.
JPEG, PNG or WebP; up to 5 MB, 16 million pixels and 8192 pixels per side. Original bytes and metadata are retained.FREE
Image brightness and contrast
Adjust brightness and contrast locally. Preview the result and download a PNG without changing the original.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Brightness adds up to ±255 to RGB channels. Contrast scales their distance from midpoint 128 by a factor of 0–2. Clipped highlights/shadows cannot be restored.Output dimensions: —
Explore toolsFREE
Black-and-white image
Convert a color image to grayscale using weighted luminance. Transparency and original dimensions are preserved.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Produces shades of gray using weighted RGB luminance and preserves alpha transparency. No file is uploaded.Output dimensions: —
Explore toolsFREE
Round profile image
Center-crop an image into a circle and download a square PNG with transparent corners.
JPEG, PNG or WebP; up to 20 MB, 16 million pixels and 8192 pixels per side. PNG output preserves transparency. Animated images use one frame.Uses the largest centered square of the source, clipped to a circle. Corners stay transparent in PNG; enlarging a small source does not add detail.Output dimensions: —
Explore toolsFREE
Images to PDF
Combine JPEG, PNG and WebP images into one PDF. Reorder images and choose A4 or original-size pages.
Up to 20 JPEG/PNG/WebP images, 20 MB each and 50 MB total. Each image: up to 16 million pixels and 8192 pixels per side. Animated images use one frame.Selected files: 0
Files are processed in the order below.Output pages: —
Explore toolsFREE
Merge PDF files
Combine the pages of multiple plain PDF files in the order you choose. Originals stay unchanged.
Up to 10 PDFs and 50 MB total; at most 200 source pages. Encrypted, signed and form PDFs are not supported. Bookmarks, attachments and document-level features are not retained; review the output.Selected files: 0
Files are processed in the order below.Output pages: —
Explore toolsFREE
Extract PDF pages
Choose pages such as 1-3,5 and download them together as a new PDF. Page numbering starts at 1.
One PDF up to 50 MB and 200 pages. Encrypted, signed and form PDFs are not supported. The selected pages are saved in one new PDF; document-level features are not retained.Selected files: 0
Files are processed in the order below.Output pages: —
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Your images, text, QR contents and calculations are processed in your browser. Read our privacy policy for details about hosting, local storage and the current advertising status.
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Frequently asked questions
Is my input sent to a server?
Your images, text, QR contents and calculations are processed in your browser. Read our privacy policy for details about hosting, local storage and the current advertising status.
Is this tool free?
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