NanoPDF
Merge PDFs in your browser — files never leave your device
What it does
NanoPDF lets you merge multiple PDFs entirely in your browser. Drag and drop files, reorder them, and download one PDF — no upload to servers, no sign-up, no watermark, and no free-tier limits. Your files stay on your device the whole time. Works on desktop, tablet, and phone.
Merge PDF files online for free. The fastest PDF merger – combine multiple PDFs in any order. No sign-up, no watermark, files never leave your device.
The easiest free PDF merger — combine multiple PDFs in any order right in your browser. No sign-up, no watermark, no upload to servers. Drag the handle to change merge order. Files stay in your browser memory only. On iPhone and iPad, Safari cannot download files like a computer. Tap below and choose Save to Files or share elsewhere. Three steps. No install. No upload to servers — everything happens in your browser. Select multiple PDFs at once — no file count limit on the free tool. Reorder files with drag-and-drop. Undo anytime before you merge. Get your combined PDF in seconds. Files never touch a server. Merging PDFs means combining two or more documents into a single file, in the order…from nanopdf.net
Does the same job
all alternatives →- MergePDF18d ago · merge-pdf-bice.vercel.app · ▲1
Merge, split & rearrange PDFs privately in your browser



More work this month
the category →


The app store for voice native apps that lives in your notch
Work · 28d ago · voiceos.com

The New Calendly▲211Handle all of the work before, during, and after meetings
Work · 17d ago · calendly.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com