Alternatives

Products that do what Annotate PDF does

Annotate and sign PDFs privately in your browser

1. 1FI
   Free, in-browser PDF editor▲791

   Add text, input boxes, pictures, signatures, delete pages, merge PDFs and password protect them. All happening in the browser, 100% free and no sign-up.

   2025 · breezepdf.com

2. 2
   SafeNotes▲71

   Securely annotate and store your PDF documents

   2019

3. 3AP
   Annotate PDFs in Markdown▲39

   2022 · keypoints.app

4. 4
   PDF Annotator by Good Annotations▲105

   Draw on your pdf online

   2020

5. 5
   open-pdf-sign▲105

   Open-source tool for digitally signing PDFs

   2022

6. 6
   FreeWWW Image & PDF Markup▲4

   Annotate images and PDFs quickly in your browser

   Jul 2026 · freewww.com

7. 7
   Mudra▲4

   Sign PDFs in your browser. No uploads. No Adobe. Free.

   Jun 2026 · usemudra.com

8. 8
   Only PDF Editor▲9

   The private PDF editor — no upload, no login, no watermark

   Jul 2026 · onlypdfeditor.com

9. 9SE
   Simplepdf.eu – a browser-based PDF annotator / editor▲47

   Hi HN! I've been working on SimplePDF to solve a problem I encounter weekly: filling out non-editable PDFs [1] --- # About SimplePDF - The documents you load, edit, fill never see the light of my server, everything is processed locally – no remote uploading anything. This includes the PDF generation. - There are no analytics / third party tracking your every move (I do collect usage data, but it's fully anonymous and processed and stored on my server): therefore no annoying cookie banner. You can read more on the Privacy Policy [2] - If someone before you has filled the same document,…

   2022 · simplepdf.eu

10. 10PM
    PrivatePDF – minimal PDF editor that runs in the browser▲14

    I created this tool to make it quick and easy to sign PDF contracts, without having to deal with installing additional software and without worrying that my PDFs will get uploaded to a third party. It supports the bare minimum for my most common usecases. It is not intended to be a full-featured PDF editor. Features include filling PDF forms, inserting images and text, and rotating PDFs. Check it out by either picking a PDF of your own - https://photown.github.io/private-pdf/, or with a preloaded sample PDF -…

    2023 · github.com

11. 11
    Quick PDF Sign▲2

    Sign PDFs free — no uploads, no account, 100% private

    Jun 2026 · quickpdfsign.com

12. 12
    Editaê PDF▲3

    Edit, merge, and sign PDFs directly in your browser.

    25d ago · editaepdf.lovable.app

13. 13
    pdfedit.best

    Free Online PDF Editor - No Watermark, No Sign-up, Private

    Jan 2026

14. 14
    PDF Filler▲3

    Fill & sign PDFs free — no upload, no account, no limits

    Jun 2026 · fillsignpdf.com

15. 15
    Free Pdf Edit, Sign & Redact Offline ▲1

    PDF Edit, Add text, images, signatures, Fast, no upload

    17d ago · pdfedit.senaskat.com

16. 16
    FileHook▲6

    Edit PDFs in your browser. Free, fast, private.

    Jul 2026 · filehook.app

17. 17
    PDFlastica▲9

    Sign PDFs offline with typed and drawn signatures

    Jul 2026 · garmahis.com

18. 18FA
    Fill and sign PDF from any website with a single line of code▲16

    2023 · simplepdf.github.io

19. 19
    PDFAnnotations▲2

    Extract PDF highlights to Notion & Obsidian — 100% Local

    Feb 2026

20. 20
    Free PDF Editor▲3

    Completely Free, No account needed, Edit, create, Sign

    Jun 2026 · quickpdfeditor.com

21. 21
    LocalSign▲7

    Free PDF editor and signer that runs in your browser

    Jun 2026 · localsign.infrays.org

22. 22
    Firmalo▲6

    Sign PDFs online free, no signup or watermark

    Jul 2026 · firmalo.io

23. 23
    Offline PDF Editor▲3

    A free, 100% PDF editor — your files never leave your device

    Mar 2026

24. 24
    PDF Raven▲2

    Edit PDFs for real — no login, no watermark, no installs.

    Aug 2026 · pdfraven.com

Ranked by how close each launch is in meaning, then by votes. Refine with a description →