SteveTheKiller/KillerPDF
Free and open-source PDF editor for Windows. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fill forms, print, flatten, and open password-protected PDFs without a subscription. observed · 2026-08-28
Health v2 · maintenance only
81/100
- Activity 99
- Release rhythm 99
- Longevity 10
Flags: young
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 4
- age_days: 140
- days_rel: 11
- days_push: 7
- n_releases_24m: 26
Adoption not part of the score
3656 stars · 277 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
KillerPDF is a free, open-source (GPL-3.0) PDF editor for Windows built with C# and WPF, offering viewing, annotation, OCR, form filling, signing, page organization, and text editing entirely offline. It ships as a small installer or portable executable with no accounts, subscriptions, or telemetry.
Use cases
- edit text in a pdf without adobe subscription
- ocr scanned pdfs to make them searchable
- merge and split pdf files offline
- fill and sign pdf forms
- open password-protected or damaged pdfs
- annotate and highlight pdf documents
- batch process and flatten pdfs for printing
When to choose
- you need a free, no-subscription Adobe Acrobat alternative on Windows
- you want fully local, private PDF processing with no cloud or telemetry
- you need a portable single-exe tool for field/IT support work
- you need offline OCR, form filling, and signing in one lightweight app
When to avoid
- you need cross-platform support for macOS or Linux
- you require advanced professional publishing or prepress PDF workflows
- you need cloud-based collaboration or document sharing features
Facets
application · maturity active
pdf ocr image-processing gui pdf-viewer pdf files developer-tools windows windows dotnet pdf-editor pdf-annotator form-filling digital-signatures portable-app no-telemetry wpf pdfium tesseract gplv3 adobe-alternative desktop
3 sources
- readme: https://github.com/SteveTheKiller/KillerPDF · fetched 2026-08-28 · e3030322248a
- homepage: https://KillerPDF.net · fetched 2026-08-29 · c741207d072d
- site_page: https://killerpdf.net/about.html · fetched 2026-08-29 · 864bda1f7a6c
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| SteveTheKiller/KillerPDF | main | 81 |
For agents
markdown · JSON · MCP: product_card(name="SteveTheKiller/KillerPDF")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem