PDFCatalyst

What it does

Edit PDFs entirely in your browser — no upload, no signup. Merge, split, sign, fill forms, redact, edit text, compress, watermark, image↔PDF. 24 tools. Free. Built with pdf.js + pdf-lib + IndexedDB. Your files literally never leave the tab. EN + VI.

Privacy-first PDF tools, built in Singapore. Fill, sign, annotate, fill AcroForms, watermark, page-number, split, merge — no signup, no subscription, no upload. EN · VI co-equal.

• 
  Free, in-browser PDF editor2025 · breezepdf.com · ▲791

  BreezePDF lets you edit, sign, merge, compress, redact, OCR, fill forms, extract tables, and use 30+ more PDF tools — all in the browser, no sign-up. Files never leave your computer. I built it because when people search Google for common PDF tasks, many of the tools they find upload documents to a server. I wanted an option that keeps files local instead. I posted an earlier version on HN last spring: https://news.ycombinator.com/item?id=43880962 At the time it only supported a small set of features. Over the last 10 months I rebuilt large parts of it and expanded it to…

• 
  SimplePDF for Chrome2023 · chromewebstore.google.com · ▲99

  Edit, fill and sign PDF files from any Chrome tab

• 
  PDF Editor ProDec 2025 · pdfedit4u.com

  Client-side processing. Your files never leave your browser

• 
  PDFDealJul 2026 · ▲3

  Every PDF tool you'll ever need, in one browser tab

• 
  FileHookJul 2026 · filehook.app · ▲6

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

• 
  PDF Tools by RenderlogApr 2026 · ▲3

  Free PDF tools that never upload your file

• 
  Lofi Cities – Pixel-art city nights with browser-generated lofi▲319

  Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.

  Work · 27d ago · loficities.com

• 
  Smooth Recorder▲257

  Mac screen recordings that look edited when you hit stop

  Work · 21d ago · smoothrecorder.com

• 
  Figma Specs▲225

  A container for your context that lives on the Figma canvas

  Work · 5d ago · figma.com

• 
  The rarest tech books and docs you've probably never read▲190

  Work · 15d ago · readrare.com

• 
  Brew ▲900

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲795

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• 
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

• 
  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com