Developer
Debug JSON and API payloads without uploading private data
When requests fail, a structured local checklist beats guesswork.
FastOnlineTools
All tools are organized by category. Pick a category and start working with the right tool instantly.
Generate barcodes in multiple formats.
Export code snippets as images.
Format and minify JSON.
Remove whitespace from JSON.
View JSON in a tree structure.
Format XML for readability.
Format SQL into a clean structure.
Format CSS code.
Generate CSS background patterns.
Create border-radius styles visually.
Create CSS box-shadow styles visually.
Create custom checkbox styles visually.
Create CSS clip-path shapes visually.
Create cubic-bezier easing curves visually.
Create glassmorphism effects visually.
Create CSS gradients visually.
Create CSS loading animations visually.
Create CSS toggle switches visually.
Create CSS text glitch effects visually.
Create CSS triangles visually.
Generate shadow styles for React Native.
Generate organic SVG blob shapes.
Generate repeatable SVG patterns.
Convert SVG stroke shapes to fill.
Convert SVG files to PNG images.
Minify and compress CSS code.
Encode and decode HTML entities.
Indent and clean up HTML.
Minify and compress HTML code.
Format and clean up JavaScript.
Minify and compress JavaScript code.
Convert Markdown to HTML quickly.
Convert HTML to Markdown.
Encode text to Base64.
Decode Base64 into plain text.
Encode and decode Base64.
Encode or decode URL strings.
Generate SEO-friendly URL slugs from text.
Read JWT payload without verification.
Generate and decode JWTs locally.
Generate and compare MD5 hashes.
Generate and compare SHA1 hashes.
Generate and compare SHA224 hashes.
Generate and compare SHA256 hashes.
Generate and compare SHA384 hashes.
Generate and compare SHA512 hashes.
Generate Open Graph and Twitter meta tags.
Find, filter and copy Google font pairs.
Count words, characters and lines.
Upper, lower, title and camel case.
Count letters, characters, and lines.
Randomize list items, optionally removing duplicates.
Generate placeholder text in seconds.
Reverse character order.
Remove line breaks from text.
Clean repeated spaces and tabs from text.
Remove duplicates from lists.
Remove emojis from text.
Convert text to a handwriting-style preview and PNG.
Calculate VAT at 19% and 7%.
Solve percentage calculations quickly.
Calculate age from birth date.
Count days between two dates.
Calculate body mass index.
16:9, 4:3 and custom ratios.
Calculate discounted sale prices.
Estimate X/Twitter ad revenue from impressions.
Generate secure passwords.
Generate numbers between min and max.
Roll dice with values from 1 to 6.
Flip a coin in your browser.
Generate UUID v4 instantly.
Split lists into random teams.
Generate synthetic IBANs for tests and demos.
Create QR codes locally in your browser.
Edit images with Instagram-style filters.
Create and export Instagram post mockups locally.
Create and export Instagram story mockups locally.
Create and export tweet mockups locally.
Fetch Vimeo thumbnails from URL or video ID.
Fetch YouTube thumbnails from URL or video ID.
Find the average color of an image.
Extract dominant colors from images.
Pick colors from images by clicking.
Crop images locally and export the result.
Apply image filters locally and export.
Resize images locally and export the result.
Convert images locally to Base64, Data URI and snippets.
Censor image regions locally with pixelate, blur or black bars.
Convert HEX color values to RGB.
Mix two colors and get HEX/RGB output.
Generate lighter and darker shades of a color.
Convert HEX colors with alpha to RGBA.
Convert RGB values to HEX.
Convert RGBA values to HEX including alpha.
Compress images client-side.
Compress videos client-side.
Remove image backgrounds locally in your browser.
Developer
When requests fail, a structured local checklist beats guesswork.
Developer
Fast content releases are easier when formatting, conversion, and minification follow one clear sequence.
Image, Video & Color
Strong performance and visual consistency come from repeatable image and color routines, not one-off fixes.