2,658 tools · 20 categories · zero uploads
Free online tools that run entirely in your browser
Tools for JSON, text, CSV, numbers, time and images. Your files and data never leave your device.
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Popular tools
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Prettify JSON
Beautify a JSON data structure with your preferred indentation.
Compress a PNG File
Re-compress a PNG and optionally reduce its color map to save bytes.
Convert PNG to JPG
Convert lossless alpha PNGs into compressed, flat JPEG photos.
Count Words in Text
Count how many words the text contains.
Base64-encode a String
Convert a string to Base64 encoding, right in your browser.
Generate a Random Password
Quickly generate random passwords of arbitrary length.
Convert CSV to JSON
Turn CSV spreadsheet data into a JSON array of objects.
Convert Unix Time to Human Time
Turn Unix epoch timestamps (seconds since 1970) into readable UTC date-times.
Browse by category
2,658 tools in 20 categories
JSON Tools
90Prettify, minify, validate, convert and transform JSON data.
Text Tools
211Transform, analyze, clean up and generate plain text.
String Tools
159Encode, decode, split, join and manipulate strings.
CSV Tools
133Convert, edit, filter and restructure CSV spreadsheets.
List Tools
114Sort, deduplicate, shuffle and transform lists of items.
Math Tools
234Calculators, sequences, fractals and math utilities.
Number Tools
194Generate, convert, round and analyze numbers.
Integer Tools
133Work with whole numbers: bases, ranges, sequences and more.
Time Tools
90Timestamps, timezones, calendars, clocks and astronomy.
Random Tools
120Random numbers, passwords, names, data and choices.
ASCII Tools
81Convert to and from ASCII, ASCII art and control codes.
Binary Tools
112Convert, edit and analyze binary numbers and data.
Hex Tools
108Convert to and from hexadecimal, hex dumps and colors.
Unicode Tools
98Inspect, convert and transform Unicode text and symbols.
UTF-8 Tools
69Encode, decode, validate and repair UTF-8 data.
PNG Tools
108Compress, resize, convert and edit PNG images.
JPG Tools
145Compress, resize, convert and edit JPG photos.
GIF Tools
110Create, edit, split and convert animated GIFs.
WebP Tools
57Convert, compress and edit WebP images.
Image Tools
200Resize, crop, convert and edit images of any format.
PDF Tools
92Merge, split, convert, compress, sign and secure PDF documents.