Rubtin

What it does

Use Rubtin's free PDF tools to merge, split, compress, and convert PDF files directly in your browser. No uploads required. Fast, secure, and private.

Rubtin offers 100+ free browser tools for PDF, images, AI, developers, finance, and text. All processing happens locally in your browser, so your files never leave your device.

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  PDF Tools2025 · pdf-vert.com · ▲14

  Free browser-based PDF toolkit — no uploads, no sign-up

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  The PDF Buddy2025 · thepdfbuddy.netlify.app · ▲12

  Best online PDF assistant with 30+ useful utility tools

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  PDF ToolkitJul 2026 · pdf-toolkit-9.ai.studio · ▲5

  Your files never leave your device. Free PDF tools

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  Handy Jan 2026 · handy.senement.com · ▲6

  All the tools. One handy place.

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  Privacy First Tools - Free and PrivateFeb 2026 · privacyfirst.tools · ▲10

  Free online tools for images, PDFs & more - 100% private

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  Free PDF CombineMay 2026 · freepdfcombine.com · ▲2

  The privacy-first PDF toolkit that never uploads your files.

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  /dev/null▲490

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 24d ago · openbot.run

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  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

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  Run full iOS 16.5 firmware on Android Devices▲341

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 12h ago · github.com

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  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

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  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

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  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

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  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

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  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

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  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com