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2,671 tools · 22 categories · zero uploads

Free online tools that run entirely in your browser

Tools for JSON, text, CSV, images, PDF and video. Compress a 5 GB video here and not one byte of it crosses the network.

Nothing is uploaded
Works offline
No file size limit
Free, with no sign-up

Network activity

holiday-clip.mp44.9 GB, compressed to 512 MB

Uploaded: 0 B
Downloaded: 0 B
Stored on a server: Nothing

Processed by this browser, on this device

What your network sees while this site compresses a 4.9 GB video. How that works

Popular tools

Hand-picked favorites

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.

How it works

Your files never leave your computer

"Runs in your browser" sounds like marketing, so here is what it actually means. All 2,671 tools on EditSafely are ordinary JavaScript that your browser downloads once and then runs on your own machine, the way an installed app would. There is no server behind them doing the work, which means there is nothing for your files to be uploaded to.

Compress a 5 GB video here and exactly 0 bytes of it cross the network.

How most online tools do it

5.5 GB over the network

Your 5 GB videoon your disk
Upload it5 GB up, minutes of waiting
Their server does the workyour file sits on their disk
Download the result480 MB back down

How EditSafely does it

0 bytes over the network

Your 5 GB videoon your disk
Your browser does the workyour own CPU, no upload
A 480 MB videosaved straight to your downloads

There is no upload step
Your browser opens the file from your disk the same way an installed app would. The bytes go from your drive into this tab and no further.
Big files are not a problem
No server means no upload limit and no queue. Speed comes down to your own machine, so a multi gigabyte file starts processing right away instead of after a long transfer.
It keeps working offline
Once the page has loaded you can disconnect from the internet entirely and the tool carries on. There is nothing on the other end for it to talk to.
Nothing is stored anywhere
No account, no history, no copy on a server waiting to be leaked. Close the tab and the work is gone from everywhere it ever existed.

Browse by category

2,671 tools in 20 categories

JSON Tools

Prettify, minify, validate, convert and transform JSON data.

Text Tools

Transform, analyze, clean up and generate plain text.

String Tools

Encode, decode, split, join and manipulate strings.

CSV Tools

Convert, edit, filter and restructure CSV spreadsheets.

List Tools

Sort, deduplicate, shuffle and transform lists of items.

Math Tools

Calculators, sequences, fractals and math utilities.

Number Tools

Generate, convert, round and analyze numbers.

Integer Tools

Work with whole numbers: bases, ranges, sequences and more.

Time Tools

Timestamps, timezones, calendars, clocks and astronomy.

Random Tools

Random numbers, passwords, names, data and choices.

ASCII Tools

Convert to and from ASCII, ASCII art and control codes.

Binary Tools

Convert, edit and analyze binary numbers and data.

Hex Tools

Convert to and from hexadecimal, hex dumps and colors.

Unicode Tools

Inspect, convert and transform Unicode text and symbols.

UTF-8 Tools

Encode, decode, validate and repair UTF-8 data.

PNG Tools

Compress, resize, convert and edit PNG images.

JPG Tools

Compress, resize, convert and edit JPG photos.

GIF Tools

Create, edit, split and convert animated GIFs.

WebP Tools

Convert, compress and edit WebP images.

Image Tools

Resize, crop, convert and edit images of any format.

PDF Tools

Merge, split, convert, compress, sign and secure PDF documents.

Video Tools

Compress, convert and edit videos right in your browser.