# PDFinish on Windows, Mac and phones: browser support

> PDFinish works in your browser on Windows, Mac, Linux, iPhone, iPad and Android, with nothing to install. A current version of Chrome, Edge, Firefox or Safari is all it needs, so it does not matter whether your PC is 32-bit or 64-bit.

Page: https://pdfinish.com/browser-support
Last updated: October 29, 2026

## Browsers and systems, and what we test

| Browser | System | Tested? | What that means |
| --- | --- | --- | --- |
| Google Chrome | Windows | Yes, every night something changed | Automated tests run in real Chrome on a GitHub Windows machine each night after we have published a change. On Tuesday and Friday nights Edge and Firefox are tested instead. |
| Microsoft Edge | Windows | Yes, on Tuesday and Friday nights | The same automated tests run in real Microsoft Edge on a GitHub Windows machine on Tuesday and Friday nights, when something changed, together with our unit tests on Windows. The latest run passed on October 28, 2026. |
| Mozilla Firefox | Windows | Yes, on Tuesday and Friday nights | The same automated tests run in real Firefox on a GitHub Windows machine on Tuesday and Friday nights, when something changed. The latest run passed on October 28, 2026; one test passed on its second try. |
| Safari (WebKit) | Mac | Yes, the engine, on Sundays | The same automated tests run in WebKit, the engine Safari is built on, on a GitHub Mac machine each Sunday, when something changed. The latest run passed on October 28, 2026. We test the engine, not the Safari app. |
| Chrome, Firefox | Linux | Not in a Linux browser | Our unit tests run on Linux with every change, and Chrome uses the engine we test on Windows. We do not run browser tests on a Linux desktop. |
| Safari, Chrome | iPhone, iPad | At phone sizes, not on real devices | Our phone-layout tests run on our own Mac in WebKit with iPhone 14 settings. We have not run them on a real iPhone or iPad. |
| Chrome, Firefox | Android | At phone sizes, not on real devices | Our phone-layout tests run on our own Mac in Chromium at 390 pixels wide with touch on. We have not run them on a real Android phone. |
| Internet Explorer | Windows | Not supported | Microsoft ended support for the Internet Explorer 11 desktop app on certain versions of Windows on June 15, 2022. PDFinish shows a plain notice there and asks you to open it in a current browser. |

- GitHub's Windows machines run Windows Server, so we say "Windows" and do not claim a test on Windows 10 or Windows 11 in particular.
- DuckDuckGo's browser: we have not tested it. PDFinish is an ordinary web page that needs a current browser engine, so we expect it to work, but we do not claim it.
- Very large PDFs depend on your browser's memory. A 32-bit browser has less, so use a current 64-bit browser or a smaller file if a big file fails.
- Word, Excel, PowerPoint, RTF and ODT to PDF upload your file to our server to convert it, then delete it when the conversion finishes. Every other tool runs in your browser. Fonts that are not on our server, such as Calibri and Arial, are swapped for look-alikes, so a Word file's letters can look slightly different.

## Try PDFinish

- [Merge PDF](https://pdfinish.com/merge-pdf): Combine several PDFs into one file, in the order you choose.
- [Compress PDF](https://pdfinish.com/compress-pdf): Shrink a PDF so it is easier to email and upload.
- [PDF Editor](https://pdfinish.com/edit-pdf): Change a line of text, or add text, shapes and images.
- [Sign PDF](https://pdfinish.com/sign-pdf): Draw or type your signature and place it on the page.
- [Fill PDF](https://pdfinish.com/fill-pdf): Fill a PDF form, with or without fillable fields: type, tick, sign and date.
- [Split PDF](https://pdfinish.com/split-pdf): Pull a PDF apart by page ranges, or save every page on its own.

## Common questions

### Does PDFinish work on Windows?

Yes. PDFinish runs in your web browser, so it works on Windows, Mac, Linux, iPhone, iPad and Android. Use a current Chrome, Edge, Firefox or Safari. There is nothing to install, so it does not matter whether your PC is 32-bit or 64-bit. Open pdfinish.com, add your file and download the result.

### Is PDFinish 32-bit or 64-bit?

Neither. It is a web page, not a program, so there is nothing to install. It runs in your browser, and any current browser will do. For very large PDFs a 64-bit browser has more memory to work with.

### Does PDFinish work in Microsoft Edge?

Yes. We run our automated tests in real Edge on Windows on Tuesday and Friday nights, when something changed, and the latest run passed on October 28, 2026. Edge is built on the same engine as Chrome, which we test on the other nights.

### Does PDFinish work in Firefox?

Yes. We run our automated tests in real Firefox on Windows on Tuesday and Friday nights, when something changed, and the latest run passed on October 28, 2026. We have not run them in Firefox on a Mac or Linux.

### Does PDFinish work in Safari on a Mac or iPhone?

It is built to. We run our automated tests in WebKit, the engine Safari uses, on a Mac each Sunday, and at iPhone screen size. We have not tested on a real iPhone or iPad.

### Does PDFinish work in Internet Explorer?

No. Microsoft ended support for the Internet Explorer 11 desktop app on certain versions of Windows on June 15, 2022. If you open PDFinish in it, you see a short notice asking you to switch to Chrome, Edge, Firefox or Safari.

### Do I need to install anything on Windows?

No. There is no app, plug-in or extension. Open pdfinish.com in your browser, add a file and download the result.

### Does PDFinish work on a phone or tablet?

Yes. The pages are made for phone screens, and the tools run in the phone's browser. We test at phone sizes, not on real devices yet.

## Sources

- [Microsoft: Lifecycle FAQ for Internet Explorer and Microsoft Edge](https://learn.microsoft.com/en-us/lifecycle/faq/internet-explorer-microsoft-edge), read October 28, 2026.