OffTility
Runs in your browser

Your work.
Your terms.
Your device.

No watermarks. No paywalls. No uploads. Everything runs on your device, so your files stay yours.

The tools

22 in progress

PDF Tools

Image to PDF

Photos and scans into one tidy PDF.

Merge PDF

Join several PDFs, in the order you choose.

Split PDF

Pull out pages or break a file into parts.

Compress PDF

Smaller file, readable text, no watermark.

Coming soon

PDF to JPG

Turn PDF pages into image files.

Coming soon

Rotate PDF

Fix sideways or upside-down pages.

Coming soon

Organize PDF

Reorder, add, or remove pages visually.

Coming soon

Crop PDF

Trim margins or whitespace from pages.

Coming soon

Add Page Numbers

Stamp page numbers onto every page.

Coming soon

Add Watermark

Overlay text or a logo across pages.

Coming soon

Extract Text from PDF

Pull the plain text out of a document.

Coming soon

PDF to Markdown

Convert a PDF's content into Markdown.

Coming soon

Unlock PDF

Remove a password you already know.

Coming soon

Protect PDF

Add a password to a PDF you own.

Coming soon

Sign PDF

Drop a signature onto a document.

Coming soon

Fill PDF Forms

Type directly into a PDF's form fields.

Coming soon

Compare PDF

See what changed between two versions.

Coming soon

Edit PDF

Add text, shapes, or images to a page.

Image Tools

Developer Tools

Text Tools

Case Converter

Switch between upper, lower, title, and more.

Coming soon

Word & Character Counter

Count words, characters, and reading time.

Markdown to HTML

Render Markdown as clean HTML.

Coming soon

Lorem Ipsum Generator

Placeholder text, sized how you like.

Converters

CSV to JSON

Turn a spreadsheet export into JSON.

JSON to CSV

Flatten JSON into a spreadsheet-ready CSV.

Coming soon

YAML to JSON

Convert YAML config into JSON.

Coming soon

Unit Converter

Length, weight, temperature, and more.

Calculators

Coming soon

Percentage Calculator

Percent of a number, or the change between two.

Coming soon

Loan / EMI Calculator

Monthly payments on a loan amount.

Coming soon

BMI Calculator

Body mass index from height and weight.

Coming soon

Date Difference Calculator

Days, weeks, or months between two dates.

How it works

Your files are processed by your browser, and never transmitted.

There is no server to send anything to. When you pick a file, it is read by the page you already loaded, worked on in memory, and handed back to you.

1

You pick a file

The file picker hands the bytes to the page. Nothing is copied anywhere else.

2

Your browser does the work

The maths runs in your tab, on your processor, using the code already downloaded.

3

You save the result

The finished file is written straight to your downloads folder.

4

You can check for yourself

Open your browser's developer tools, watch the Network tab, and use a tool. No request carrying your file appears, because none is made.

Your files are processed on your device. Nothing is ever uploaded.

Why offline

Private by design

There's no account, no upload, and no copy kept anywhere but your device.

Works offline

Once the page has loaded, the tools keep working without a connection.

No queue, no limits

Nothing is rate-limited or queued behind other people's files.

No account, ever

Nothing to sign up for, and nothing tied to your identity.

Android

The same tools, in your pocket.

The Android apps work the same way as the site: offline-first, with nothing leaving your device. They're not published yet.

Android app — coming soon

APK and Play Store