Your files stay on this device.

417 free tools for PDFs, images, video, spreadsheets and everyday sums. They run in this browser tab, on your own processor. Nothing is uploaded.

Fig 1 Worked on here. Sent nowhere.

Move across to feed the sheet · ← → sheet 1 · being worked on · 0 B sent

The orange sheet is your file. Your own processor does the work, inside the case. The case has one network port, and it is screwed shut.

Check it yourself

The privacy here is how the site is built, not a promise in a policy. Three ways to see it.

Nothing is uploaded: Open your browser’s network panel, then use any tool. No request carries your file, because there is nowhere to send it: the site is static files and nothing else.
Nothing can be sent: Every page arrives with a connection policy that lets it talk to this site only. Your browser refuses any other address. connect-src 'self' blob: data:
Your machine does the work: The heavy lifting is WebAssembly running in your tab: the same codecs desktop software uses, on your own processor. A 300 MB file is fine if your device has the memory.

Most used

All 417 tools

Merge PDF Combine several PDFs into one document, drag to reorder files, and pick page ranges per file. Runs in your browser — nothing is uploaded. Compress PDF Shrink PDF file size with three quality presets or a lossless clean-up re-save. See the before and after size and percentage saved instantly. PDF to JPG Turn every page of a PDF into a JPG image at 72, 150 or 300 DPI, preview the results, then download them individually or as a ZIP. JPG to PDF Combine JPG photos into a single PDF, reorder them by drag and drop, and control page size, orientation, margin and how each image fits. Split PDF Split a PDF every N pages, by custom ranges like 1-3, 7, 10-, or into one file per page. Multiple outputs arrive as a ZIP, all done locally. Compress Image to 100KB Hit an exact 100 KB limit with a local binary-search encoder that shows every attempt. No upload, no queue, no cap on how many images you try. Resize Image Resize JPG, PNG, WebP and AVIF by pixels, percentage or social media preset. Lock the aspect ratio, batch resize, keep the original format. PNG to JPG Convert PNG to JPG in your browser: batch files, choose a background colour for transparency, set quality, download instantly. MOV to MP4 Turn QuickTime MOV files into MP4. When the video is already H.264 it is copied across in seconds with zero quality loss — and never uploaded. MP4 to MP3 Extract the soundtrack from MP4 video as an MP3 at up to 320 kbps. Queue as many files as you like — every one is decoded on your own device. Video to GIF Turn any clip into a sharp animated GIF: pick the range, frame rate and width, with a two-pass palette for accurate colour. All local. Mortgage Calculator Calculate your full monthly mortgage payment with property tax, insurance, HOA and PMI, plus total interest, payoff date and amortisation schedule. Percentage Calculator Work out X% of Y, what percent one number is of another, percentage increase or decrease, and add or subtract a percentage — with steps. BMI Calculator Work out your body mass index in kg/cm or lb/ft, see the category gauge, your healthy weight range, and what BMI does and does not measure. Word Counter Count words, characters, sentences, paragraphs and reading time as you type, with keyword density and live social character limits. JSON Formatter Beautify, minify and validate JSON with the exact line and column of any error, sort keys, escape strings and generate TypeScript interfaces. QR Code Generator Create QR codes for links, text, phone numbers and more. Pick the size, colours, quiet zone and error correction, add a logo, then save PNG or SVG. Password Generator Generate strong random passwords with a length slider, character-class toggles, bulk output and a live entropy meter. Nothing is ever transmitted.

Every bench

16 categories. Each has its own page, and its own machine.

Files & Documents

PDF Tools 43

Merge, split, compress and edit PDFs

PDF Converters 18

Convert PDFs to and from anything

Documents & Data 20

CSV, JSON, YAML, Excel, Word, Markdown

Images & Media

Image Converters 13

JPG, PNG, WebP, AVIF, HEIC and more

Image Editing 31

Resize, crop, compress and clean up

Video & Audio 43

Convert, trim and extract with FFmpeg

Calculators

Finance Calculators 22

Mortgages, loans, interest and savings

Health Calculators 14

BMI, calories, body composition

Math & Statistics 12

Percentages, algebra, geometry, stats

Unit Converters 47

Length, weight, temperature, data

Date & Time 15

Age, durations, timestamps, timezones

Everyday Calculators 18

Tips, discounts, grades, fuel

Text & Code

Text Tools 25

Count, clean, compare and transform

Developer Tools 68

JSON, Base64, JWT, regex, colors

Security & Privacy 16

Passwords, hashes, encryption

Generators

Generators 12

QR codes, barcodes, favicons, gradients

What changes without an upload

Question	Upload services	onthisdevice
Where your file goes	To a company’s server	Nowhere. It stays in this tab
How long it takes	Upload, queue, process, download	Starts as soon as you drop the file
Size limit	Set by their free tier	Your device’s memory
Daily limit	A few files, then a paywall	None
Account	Often required for downloads	None
Watermarks	Common on free output	Never

Questions

The privacy page covers what the site stores and what it never sees.

Are my files really never uploaded?

Yes. Each tool is a static page plus JavaScript and WebAssembly. Your file is read with the browser’s File API and processed in memory on your machine. You can watch the network panel while you work: nothing carries your data.

How can this be free?

There is almost nothing to pay for. The site is a set of static files; the work runs on your computer, not on rented servers. Upload services pay for every file they process, which is why they meter you.

Do the tools work offline?

A tool keeps working after its page and its engine have loaded, even with the network off. Video tools fetch a 10 MB engine from this site the first time; your browser caches it.

What are the limits?

There is no size cap or daily quota. You are limited only by your device: how much memory the browser tab can use and how fast your processor is.

Do you use cookies, analytics or ads?

No cookies, no analytics, no trackers, no ads. Your browser stores only your theme and your recent searches, in its own local storage.