Small tools.
Real results.
Choose a task, load an example, and get to work. Every tool processes your input in your browser, without an account or an API.
Image compressor
Reduce image file size with a quality-controlled JPEG or WebP export.
Image resizer
Resize an image to exact dimensions or preserve its proportions.
Image cropper
Crop a precise rectangle using pixel coordinates.
Image format converter
Convert a raster image to PNG, JPEG or WebP.
Image to Base64
Create a data URL from an image file without uploading it.
Favicon generator
Generate a multi-size ICO favicon and a PNG preview.
Word & character counter
Count words, Unicode code points, lines and estimated reading time.
Case converter
Change text to upper, lower, title or sentence case.
Line cleaner
Trim lines, remove duplicates or sort a list.
Find & replace
Replace every literal occurrence of a text fragment.
Text difference
Compare two text versions line by line.
Markdown editor
Preview Markdown and export a self-contained HTML document.
JSON formatter & validator
Validate strict JSON and format it with readable indentation.
Regex tester
Test JavaScript regular expressions in an isolated worker.
Base64 encoder / decoder
Encode Unicode text to Base64 or decode UTF-8 Base64.
URL encoder / decoder
Encode or decode a URL component using UTF-8 percent encoding.
JWT decoder
Inspect the JSON header and payload of a JWT locally.
UUID generator
Generate random version 4 UUIDs using browser cryptography.
Hash calculator
Calculate a SHA-256, SHA-384 or SHA-512 digest of UTF-8 text.
Unix timestamp converter
Convert Unix seconds or milliseconds to UTC, or ISO UTC dates to Unix time.
Palette from image
Find the most frequent quantized colors in a raster image.
Palette generator
Build a five-color palette by rotating the hue of a chosen color.
Color format converter
Convert a six-digit HEX color to RGB and HSL.
Color contrast checker
Measure WCAG contrast between two opaque sRGB colors.
CSS gradient generator
Create a two-color linear gradient with a live preview.
CSS shadow generator
Build a box-shadow with explicit offsets, blur and spread.
SVG cleaner & preview
Remove active content, metadata and comments from SVG markup.
Date difference
Count calendar days between two dates without daylight-saving effects.
Date addition & subtraction
Add or subtract whole calendar days from a date.
Percentage calculator
Calculate a percentage of a value or the change from a baseline.
Unit converter
Convert common length, mass, temperature and volume units.
Scientific calculator
Evaluate arithmetic, powers and common scientific functions.
Function plotter
Plot a single function of x over a chosen interval.
QR code generator
Create a static QR code from plain text or a URL.
Password generator
Generate random passwords from a selected character set.
Random numbers & draw
Draw random integers or select names without replacement.