CertaDoc — Edit PDFs in Browser No Cloud

The PDF editor that never sees your files

Visit certadoc.prismdatagroup.com ↗Alternatives

What it does

Most PDF editors upload your files to their servers — CertaDoc doesn't. It runs entirely in your browser using WebAssembly, so your documents never leave your device. Annotate, sign, stamp, and rearrange pages with zero uploads. Not a single page of your file touches our servers. Start free with 100 PDFs, no credit card required.

Does the same job

all alternatives →

MoguanPDFJul 2026 · moguanpdf.com · ▲4
24 PDF tools, zero uploads. Everything runs in your browser
Offline PDF EditorMar 2026 · ▲3
A free, 100% PDF editor — your files never leave your device
123 PDF Editor PRO — Edit PDF offlineJul 2026 · pdfeditor.it · ▲1
Edit, organize, sign and manage PDF pages onlne and offline
ZeroPDFJun 2026 · zeropdf.org · ▲4
Merge, split, and edit PDFs locally in your browser.
PDF Tools by RenderlogApr 2026 · ▲3
Free PDF tools that never upload your file
FileHookJul 2026 · filehook.app · ▲6
Edit PDFs in your browser. Free, fast, private.

More work this month

the category →

Clipto MCP▲640
Let agents source clips from terabytes of your local video
Work · 19d ago · clipto.com
HyNote for Mac▲383
Free local transcription that is 100% Private
Work · 18d ago · hynote.ai
VoiceOS App Store▲330
The app store for voice native apps that lives in your notch
Work · 29d ago · voiceos.com
Scrimba Explain▲325
Ask any question, get a video back instantly
Work · 25d ago · scrimba.com
CleanShot 5.0 with Studio Mode▲278
Mac-native app for screenshots, recordings and collaboration
Work · 5d ago · cleanshot.com

Launched alongside, June 2026

the whole month →

Fundraisly▲1,544
AI fundraising agent that finds investors and books meetings
AI · Jun 2026 · fundraisly.com
H6
Homebrew 6.0.0▲1,481
Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!
Dev tools · Jun 2026 · brew.sh
PU
Performative-UI – A react component library of design tropes▲1,181
hope you enjoy
Life & fun · Jun 2026 · vorpus.github.io
Upstream▲977
The inbox designed for humans and agents
AI · Jun 2026 · upstream.do
Goldfish▲962
Press Option. It knows your work and replies like you
AI · Jun 2026 · goldfish.sh
IM
I made Google Trends for Hacker News by indexing 18 years of comments▲822
Life & fun · Jun 2026 · hackernewstrends.com