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Handybin

Free PDF tools that never leave your browser

Details

External ID
1259219
Source
PH
Company
—
Product
Handybin
Website domain
producthunt.com
Launched
Sept. 24, 2026
Cohort
—
Upvotes
2
Upvotes percentile
0.7405388069275176
Tags
Tech, Books, Accounting
Fetched at
Sept. 26, 2026, 1:02 a.m.
Updated at
Sept. 26, 2026, 1:02 a.m.

Description

Handybin is a free PDF toolkit — merge, split, compress, OCR, sign, encrypt, redact, and convert to/from Word, Excel, PowerPoint, and EPUB — with one rule: nothing ever gets uploaded. Every one of the 46 tools runs entirely in your browser via WebAssembly. No account. No watermark. No file size games. No "sign up after your 3rd free use." Works offline once the page has loaded.

Enrichment

Theme
document and PDF utility tools
Vertical
Horizontal
Function
Workflow automation
Audience
B2C
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
in-browser pdf utility tools
Manually corrected
False

Could you build this?

Partial Basic PDF operations (merge, split, OCR) are easily wired up with existing libraries, but client-side conversions between PDF and MS Office formats entirely within WebAssembly are extremely difficult.

What it would actually take: The application relies on WebAssembly ports of document engines like LibreOffice, MuPDF, or Poppler running inside web workers alongside Tesseract.js for OCR. The core technical hurdle is compiling complex C/C++ rendering and conversion engines to WASM, optimizing memory usage to avoid browser tab crashes on large files, and accurately polyfilling font rendering without server-side rendering. This requires low-level WebAssembly compilation, C/C++ toolchain knowledge, and deep understanding of document specifications.

Competitors

Other products that read as similar to this one — 560 launches clear the similarity bar, closest 8 shown.

Attention rank: #48 of 561 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 318 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a workflow automation tool for Real estate yet.