PDF24 is a free collection of PDF tools developed by geek Software GmbH, a company based in Berlin, Germany. It comes in two versions. PDF24 Tools, which works in your web browser on any device, and PDF24 Creator, a Windows program that handles files directly on your computer. Both versions support common tasks such as merging, splitting, compressing, converting, signing, protecting and scanning PDF documents with OCR. However, neither offers a full text editor for changing existing sentences inside a PDF.
| Detail | Fact |
|---|---|
| Company | geek Software GmbH, Berlin. Founded in 2006, according to PDF24's About page |
| Products | PDF24 Tools (browser) and PDF24 Creator (Windows) |
| Price | Free. The online tools are paid for by advertising |
| Account | Not required for the online tools |
| Online file handling | Encrypted transfer, deleted one hour after processing, EU data centres |
| Creator systems | Windows 10 or later for version 11. Version 9 is a lighter edition that also runs on Windows 7 |
| Latest Creator | 11.33.0, November 6, 2026 (official changelog) |
| Editing existing text | Not available. You can add text, shapes, drawings and images |
Table of contents
- What is PDF24, and how do Tools and Creator differ?
- What PDF24 can do
- Is PDF24 safe?
- Which version to use
- PDF24 Creator releases in 2026
- Windows, Mac, Linux and phones
- Can PDF24 edit existing PDF text?
- PDF24 vs Smallpdf, iLovePDF and Sejda
- PDF24 vs Adobe Acrobat
- How to do common PDF jobs
- How to uninstall PDF24
- PDF24 problems and fixes
- Pros and cons
- Verdict
- FAQ
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| Image credit / pdf24 |
What is PDF24, and how do PDF24 Tools and PDF24 Creator differ?
The two products share a toolbox but handle your files in different places. That choice decides whether your document leaves your computer. Creator also includes the PDF24 Reader, which opens PDFs, validates signatures and handles comments. PDF24 states in its legal notice that the services it currently offers free of charge will stay free.
| Question | PDF24 Tools | PDF24 Creator |
|---|---|---|
| Where does it run? | In your browser | On your Windows PC |
| Where are files processed? | On PDF24's servers | On your computer |
| Needs internet? | Yes | Not for most tools |
| Installation | None | Required |
| Mac, Linux, phones? | Yes, in a browser | No |
| Virtual PDF printer? | No | Yes. Print from any Windows program to create a PDF |
| Best for | One-off jobs on any device | Regular work and private documents |
What can PDF24 do?
PDF24 covers most everyday PDF work. These are the tasks that matter most, and the detail that decides whether each one fits your job. We also reviewed PDF 2go for additional resources.
- Merge and split. Creator can add a clickable table of contents and a cover page before each file (version 11.32.0).
- Compress. Normal mode lowers image quality to cut size. Lossless mode keeps quality but saves much less. Creator can watch a folder and compress new files automatically.
- Convert. PDF to Word, Excel, PowerPoint and Markdown. Creator converts offline, and version 11.33.0 improved Word conversion for tables and scans with a text layer. Images to PDF also accepts WebP.
- OCR. Makes scans searchable. Creator can also watch a folder and recognize new files automatically.
- Sign. Creator signs with PAdES signatures and can add a timestamp (version 11.32.0).
- Protect and unlock. Locking with only an open password now uses that password as the owner password too.
- Redact. Creator also removes metadata, attachments and scripts that could hold the hidden text (version 11.31.0).
- Compare, make fillable and check. Compare two PDFs, turn a PDF into a fillable form (form editor added in 11.30.0), and validate PDF/A files.
- Electronic invoices. Both versions create XRechnung and ZUGFeRD invoices. Creator also checks XRechnung, ZUGFeRD/Factur-X and Peppol invoices on your computer without uploading them.
- Fax. Creator only. Faxes go through PDF24's online fax service, and Creator shows a notice before sending.
A small business in Germany that sends invoices in XRechnung or ZUGFeRD format will find PDF24 one of the few free tools that both creates and checks them. A student merging five assignment files into one upload can use the online Merge tool, then run Compress if the portal has a size limit.
Is PDF24 safe?
PDF24 is a legitimate service run by a registered German company, and it publishes how it handles files in its privacy policy. Safety depends on which version you use and what the file contains.
| You use | What happens to the file |
|---|---|
| Any online tool | Uploaded to PDF24's EU servers over an encrypted connection, processed, and deleted after one hour |
| Creator: merge, compress, convert, OCR, sign | Stays on your computer |
| Creator: fax | Sent to PDF24's online fax service after a notice |
| Creator: invoice validation | Runs on your computer. Invoices are not uploaded |
Safety checklist
- Open the online tools at tools.pdf24.org and get Creator from PDF24's Creator page. Skip installers offered through ads or file-hosting mirrors.
- Keep Creator updated. Versions 11.31.0 and 11.31.1 closed security problems where a crafted PDF or invoice file could run script inside the toolbox. PDF24 recommends that all users update.
- Use Creator for ID scans, contracts, payslips and medical forms.
- Download online results within the hour, because the server copy is then deleted.
- If your company processes personal data through the online tools, request a data processing agreement from PDF24. Creator needs none because it works locally.
- On a phone, check that the publisher is geek Software GmbH. App stores list several apps called PDF24 from other publishers, and PDF24's own tools run in the browser.
Is PDF24 a virus?
No. The installer is large because it bundles Ghostscript, qpdf, Tesseract, OpenJDK and WebView2. Since version 11.31.0 you can deselect these components during setup. PDF24 also signs its program files and third-party components so that security policies such as Defender ASR and AppLocker do not block them.
One piece of history is worth knowing. Version 11.30.1, released April 24, 2026, fixed a case where the form editor inside Creator tried to upload a file to the online service even though that was unnecessary. PDF24 describes the upload as incorrect behavior and fixed it.
Which PDF24 version should you use?
| You are handling | Use | Why |
|---|---|---|
| A public brochure, or class assignments | PDF24 Tools | Nothing private is uploaded, no account, any device |
| A tenancy agreement with scanned IDs | PDF24 Creator | Files never leave your PC |
| A client contract to sign, as a freelancer | PDF24 Creator | Local PAdES signature with optional timestamp |
| Invoices as a small business in the EU | PDF24 Creator | Create and validate e-invoices without uploading financial data |
| Any private file on a Mac | A Mac-based offline app | No Mac version of Creator exists, and the browser tools upload every file |
| A PDF whose text you must rewrite | Sejda or Acrobat | PDF24 cannot edit existing text |
PDF24 Creator releases in 2026
| Version and date | Main changes |
|---|---|
| 11.30.0 April 9 | Markdown to PDF converter, PDF form editor, three pages per sheet |
| 11.30.1 April 24 | Stopped the form editor from uploading files unnecessarily |
| 11.31.0 October 5 | Dark mode, built-in PDF engine so many jobs no longer need Ghostscript or qpdf, driverless printer for Windows Protected Print, improved Reader, security fixes |
| 11.31.1 October 8 | Choice between the driverless and classic PDF printer, macros blocked during Office conversion, security fix |
| 11.32.0 November 2 | New start page, e-invoice and PDF/A checkers, attachment extraction, PDF to Markdown, timestamped signatures |
| 11.33.0 November 6 | PDF24 in the Windows 11 right-click menu, Save writes to the opened file, online converter removed, more accurate PDF to Word, fix for blank pages after compression |
Two changes affect daily use. In Windows 11, a right-click on a PDF now shows PDF24 in the main menu, so you no longer open "Show more options" to merge or compress. And Creator no longer falls back to an online converter. A file that cannot be converted on your computer now produces a message that explains why, such as "unpack the ZIP first" or "Office documents need Microsoft Office or LibreOffice".
The version 11.31.0 installer is about 355 MB according to ComputerBase. If you only need basic tasks on an older PC, version 9 is much smaller and still runs on Windows 7. It leaves out the Toolbox, Java and WebView2, so newer tools that live in the Toolbox, such as the form editor, e-invoices and the improved PDF to Word, are not part of it. Version 9.20.0 is based on 11.30.0.
Does PDF24 work on Windows, Mac, Linux, Android and iPhone?
The browser tools work on Windows, Mac, Linux, Android, iPhone and iPad, but every file goes to PDF24's servers. Creator runs on Windows 10 and 11, including an ARM64 installer. Windows 7 and 8 get version 9 only. There is no Creator for Mac, Linux or phones.
Mac users who handle private files have no offline PDF24 option. macOS Preview, built into every Mac, can reorder and combine pages, annotate, fill forms and sign offline. For heavier jobs, Sejda offers a desktop app for Mac.
Can PDF24 edit existing PDF text?
No. The Edit PDF tool lets you add text, drawings and images, and it can cover content with shapes, but you cannot click a sentence in the original PDF and retype it. PDF24's own editing page tells you to convert the PDF to Word when you need to change the text. A shape placed over a line only hides it visually. Use the Redact tool for sensitive details.
Workaround: change wording through Word
- If the PDF is a scan with no text, run OCR first. Creator now points this out when you try to extract text from an image-only PDF.
- Convert the PDF to Word. Version 11.33.0 turns scans with a text layer into editable text, rebuilds tables as real Word tables and keeps two-column layouts.
- Edit the text in Word.
- Save or print the result back to PDF and check the layout, since fonts and spacing can shift.
If rewriting text is your main job, Sejda or Adobe Acrobat will save you time.
PDF24 vs Smallpdf, iLovePDF and Sejda
| Tool | Free limits | Offline app and text editing |
|---|---|---|
| PDF24 | No task or page limits listed on its tools. Ads on the site | Windows app (Creator). Cannot edit existing text |
| Smallpdf | Reviews in 2026 report two tasks per day | Desktop app. Text editing reported as paid |
| iLovePDF | Limits differ by tool, with file size caps | Desktop app. Text editing reported as paid |
| Sejda | Reviews report a 50 MB and 200 page cap per file plus a task limit | Desktop app for Windows, Mac and Linux. Text editing with limits on the free plan |
Competitor limits come from 2026 reviews and change often. Third-party comparison pages also disagree with each other about PDF24's own caps, so test your largest file on the tool page before you build a workflow around any number. Since version 11.25.0, Creator's Toolbox has no file size limits, though very large files can still run into your computer's memory. PDF24 wins on free volume and on having a free Windows program. It loses to Sejda for rewriting text, and it has no Mac program.
PDF24 vs Adobe Acrobat
Choose PDF24 when the job is merging, splitting, compressing, converting, OCR or signing and you do not want a subscription. Choose Adobe Acrobat when you need to edit existing text, because full editing in Acrobat requires a paid plan. Acrobat also works on Mac, which PDF24 Creator does not.
How to do common PDF jobs in PDF24
- Make a PDF small enough to email: open Compress PDF and start with normal mode. Use lossless mode if image quality matters more than size.
- Combine several files: open Merge PDF and put the files in order before you start. In Creator, turn on the setting that names the merged file after the first document.
- Make a scan searchable: open OCR and check the language setting. "Remove existing text" in Creator now removes only the invisible layer, so visible text stays.
- Open a locked PDF: use Unlock PDF. An open password is required. Permission-only restrictions can be removed without it in Creator's document tool.
- Turn photos into one PDF: open Images to PDF, then compress the result if the file is large.
- Hide private details: use Redact PDF. A drawn black box leaves the text underneath.
How to compress a PDF for email or an upload portal
- Check the limit first. Gmail, for example, caps attachments at 25 MB, and many application portals set a much lower figure.
- Open Compress PDF and add the file.
- Run normal mode. If photos or signatures look soft, repeat with lossless mode.
- Download the result within the hour and compare its size with the limit.
Results depend on the content. A scan or photo-heavy PDF shrinks a lot, while a text-only PDF has little to lose.
How to uninstall PDF24 Creator
- Close PDF24 Creator.
- Open Windows Settings, go to Apps, find PDF24 Creator and choose Uninstall.
- Restart if Windows asks. Files still in use are deleted at the next restart.
- Check your printer list and remove any PDF24 printer that is still there.
Since version 11.33.0 the uninstaller removes the program folder even when Windows Explorer still has PDF24 files loaded, and PDF files no longer point to the removed PDF24 Reader. If PDFs open in the wrong app afterwards, pick another default under Default apps.
PDF24 problems and what to do
| Problem | Cause and fix |
|---|---|
| Online download link no longer works | Files are deleted one hour after processing. Run the job again and download within the hour. |
| Creator does not install on Windows 7 | Version 11 needs Windows 10 or later. Install the version 9 edition. |
| PDF24 printer missing after installation | The printer could not be set up. Update to the latest version. The installer now reports the failure and names a log file called pdfPrnInst.log. |
| Printing from a Remote Desktop session fails | The driverless printer does not support it. Choose the classic printer in the installer (version 11.31.1 or later). |
| Merged file is named Document1 | Default naming. Turn on the setting that names the merged file after the first document. |
| Word file from a scan is not editable | The scan has no text layer. Run OCR first, then convert. |
| "Could not convert" message | Archives and unsupported types cannot be printed to PDF. Unpack ZIP files first, and install Microsoft Office or LibreOffice for Office documents. |
| Compressed PDF shows blank pages in Safari or Preview | JPEG images were packed twice. Update Creator to 11.33.0 and compress the file again. |
PDF24 advantages and drawbacks
Advantages
- Free online tools with no account
- Free Windows program that works offline
- Wide range of tools in one place, including OCR, signing and e-invoices
- Online files deleted after one hour, on EU servers
- Frequent updates, with security fixes published in the changelog
Drawbacks
- Online tools upload your files
- Creator runs on Windows only
- You cannot retype existing text in a PDF
- The online site shows ads
- The Creator installer is large
Verdict
PDF24 is the best free option for Windows users who handle PDFs often, because Creator removes the upload step and the daily limits that other free tools impose. In a browser it remains a solid choice for quick jobs. Use Creator for anything private, keep it updated, and pick another tool if your main job is rewriting text inside PDFs or if you work on a Mac and need offline processing.
PDF24 FAQ
Is PDF24 really free?
Yes. The online tools are free and paid for by advertising, and Creator is proprietary freeware. PDF24 states that its currently free services will stay free.
Is PDF24 safe for confidential documents?
Use PDF24 Creator for confidential files, because it processes them on your computer. The online tools upload files to EU servers over an encrypted connection and delete them after one hour.
Does PDF24 upload my files?
The online tools do. Creator keeps files on your PC for merging, compressing, converting, OCR and signing. Only the fax function sends data online, and Creator shows a notice first.
How long does PDF24 keep uploaded files?
One hour after processing. Download the result within that hour or run the job again.
Is PDF24 a virus?
No. It is made by the registered German company geek Software GmbH. The installer is large because it bundles components such as Ghostscript, Tesseract and OpenJDK. Download it only from PDF24's official site.
Is PDF24 Creator offline?
Yes, for most tools. Since version 11.33.0 it has no online converter as a fallback, so a failed conversion shows an explanation instead of uploading the file.
Does PDF24 work on Mac?
Only in a browser through PDF24 Tools. There is no Mac version of Creator, so Mac users have no offline PDF24 option.
Does PDF24 work on Android and iPhone?
Yes, through the browser tools on Android phones, iPhones and iPads. Creator is not available on those devices.
Does PDF24 require registration?
No account is needed to use the online tools.
Can PDF24 edit existing PDF text?
No. You can add text, drawings and images, but not retype the original text. Convert the PDF to Word, edit it there and save it back to PDF, or use Sejda or Adobe Acrobat.
Does PDF24 have OCR?
Yes, in both PDF24 Tools and Creator. OCR makes scanned pages searchable, and it is the step to run before converting a scan to an editable Word file.
Is PDF24 better than Adobe Acrobat?
It depends on the job. PDF24 is better for free, high-volume work such as merging, compressing and converting. Acrobat is better when you need to edit existing text, but full editing needs a paid plan.
Does PDF24 add watermarks to PDFs?
No. PDF24 does not stamp its own mark on your output. A watermark appears only if you add one with the Watermark tool.
What is the latest version of PDF24 Creator?
Version 11.33.0, released November 6, 2026. Check the official changelog for newer releases.
Does PDF24 Creator run on Windows 7?
Not version 11, which needs Windows 10 or later. The lighter version 9 edition still runs on Windows 7.
How do I uninstall PDF24?
Close PDF24 Creator, open Windows Settings, go to Apps, select PDF24 Creator and choose Uninstall. Restart if Windows asks, and remove any leftover PDF24 printer.




