16 browser tools. No signup.

Developer tools that run in your browser

Format JSON, decode JWTs, generate IDs, compare text, convert time zones, and prepare images without uploading your files.

Start With

JSON Formatter

Format, minify, validate JSON — convert between formats

JWT Decoder

Decode JWT tokens, view claims, and verify HS256 signatures

GUID Generator

Generate UUIDs and GUIDs for your projects

Diff Tool

Compare and find differences between texts

Time Zone Converter

Convert times between different time zones instantly

Image Compressor

Reduce image file size without changing dimensions — export as WebP, JPEG, or PNG

All Tools

Browse by task when you know what kind of work you need to do.

Time & Scheduling

Time Zone Converter

Convert times between different time zones instantly

Timestamp Converter

Convert Unix timestamps to readable dates

UTC Time Converter

Convert between local time and UTC instantly

Code & Diff

GUID Generator

Generate UUIDs and GUIDs for your projects

Diff Tool

Compare and find differences between texts

Data & Formats

Text Sorter

Sort lines of text alphabetically or numerically

Table Format Converter

Convert between Markdown, CSV, TSV, and Excel formats

URL Encoder/Decoder

Encode and decode URLs intelligently with smart parameter handling

Design & Visuals

Color Picker

Pick, tune, save, and copy colors

UI Palette Builder

Turn one color into usable UI tokens

Image Cropper

Visually crop any image and export to favicon, app icon, or social media bundles

Retina Asset Export

Export any image as @1x, @2x, and @3x — ready for Xcode, React Native, or web

Image Compressor

Reduce image file size without changing dimensions — export as WebP, JPEG, or PNG

Data & APIs

JSON Formatter

Format, minify, validate JSON — convert between formats

JWT Decoder

Decode JWT tokens, view claims, and verify HS256 signatures

Table Builder

Build typed tables, edit data inline, and export to CSV, TSV, Markdown, or JSON