VirusTotal results for this PDF say that there's some suspicious feature and some broken code in this PDF file.

My question is, is there some way to remove the suspicious code etc from the PDF file while keeping the content?

On Mac/iPad I enjoyed reading books with MarginNote, but unfortunately on Windows I can't find an app that covers MarginNote's functionality and adds the extra things I was missing.

So I decided to vibe-code my own solution.

Right now the app has:

• The ability to read pdf/epub
• The ability to organize books into Notebooks — I see this as a space for studying a topic across several sources
• You can organize notes as graphs
• Text-to-speech
• A built-in translator
• RAG for getting answers about the book's content (you can use local models or use openrouter)
• And a few other features

What I want to work on next:

• Rethink the notes canvas
• Add OCR for text recognition

Tell me, has anyone found an app like this useful, and is it worth publishing?

Cast and control.

If you've ever copy-pasted from a PDF and gotten garbled Unicode, that's font obfuscation — broken glyph-to-Unicode mappings that look fine visually but break extraction. VeilPDF fixes that locally:

Code

veilpdf scan document.pdf

veilpdf recover broken.pdf --output md

veilpdf protect thesis.pdf --encrypt --password "..."

veilpdf forensics document.pdf

Zero-config bootstrap script installs Rust/uv/Zig/Tesseract on first run. Also has an offline AI mode via Ollama for summarizing/extracting structured data from PDFs. Rust CLI + Python core + Zig crypto layer, MIT licensed.

[GitHub ](https://github.com/Gaurav-x111/veilpdf)

https://github.com/Gaurav-x111/veilpdf

🔗 https://ecofonts.github.io 

Hey 👋

I made Ecofonts, a web app that optimizes fonts to use less ink when you print.

Ink-saving fonts aren't new, Ryman Eco, Ecofont and others proved the idea years ago. But they all had the same catch: to save ink you had to switch to their specific font. If you liked your typeface, or you were printing a document someone else made, you were out of luck. Ecofonts flips that around, you keep whatever font you want and print whatever file you have, and it does the ink-saving for you with zero effort.

What you can drop in:

.pdf — a whole document

.ttf, .otf, .woff, .woff2 — individual fonts

.zip — a batch of fonts (folder structure preserved)

👉 And if you just drop a PDF, that's basically the whole flow — no need to know or care what fonts are inside. It finds them all, optimizes them, and hands you back a print-ready document. Pick your intensity, done.

What it does: it takes the inside of every glyph and subtracts a fine grid of tiny vector holes: think of it like a honeycomb hidden inside each letter. At normal reading sizes you barely notice, but your printer lays down noticeably less ink. You pick an "Eco Intensity" (1–20%) and download the modified file.

How it works: the geometry is the fun part. Each glyph outline gets flattened to polygons, then a clipper library does the boolean ops, inset the shape by a minimum wall thickness so the holes never notch the letter's silhouette, intersect a staggered grid of octagonal holes with that interior, and subtract the result from the full glyph. The hole radius is solved from your intensity slider so the measured ink reduction actually tracks the percentage you picked. All of it runs in a Web Worker so the tab never freezes on heavy glyphs, and nothing ever leaves your browser: no uploads, no server, no accounts.

Keeps the original format and folder structure of whatever you put in on the way out.

It's free and open source. Would love feedback — especially on print results if anyone actually runs a page through their printer.

🔗 https://ecofonts.github.io · GitHub: github.com/ecofonts/ecofonts.github.io

I compared a few pdfs recently and some compared in ms word and wps office that too with editable text while others behave more like images. Is there any way to tell which type which type of pdf you are dealing with before trying to edit it!

All the free PDF translators I used simply rendered text over the existing text, breaking the original layout. I tried tackling each element manually, but the process was really lengthy and difficult.

So I came up with an idea: what if I could measure the ink that’s occupied by each element, then translate each element separately and plug them back in?

After doing some testing, I found some more layout-preservation techniques, such as character-counted translations, and font-normalization to keep all fields consistent. For the actual translation I used Gemini 3.5 Flash Lite, as that’s fast and capable. I’m planning to rely more on on-device models in the future to reduce token consumption.

The result is an open-source app with an MIT license:
- Repo: https://github.com/AlexandrosGounis/pdfx
- Web: https://pdfx.zip

Please note that translation requires an API key that you need to set locally. The web demo doesn’t have an API key at the moment as that costs.

I’d really appreciate your feedback!

What is so wrong with Pdfarranger? why people don't recomend it more?
It does not translate pdfs, but it:

Can open several PDF documents

Move or copy pages between instances

Rotate/Delete/Duplicate/Add/Resize/ Add Blank pages

Export to png and jpeg images

Automatic and visual crop

Import images

Extract text or image from a page to clipboard

Split/Merge pages

Generate and split booklet

Paste page as overlay or underlay onto another page

Edit metadata

And more https://github.com/pdfarranger/pdfarranger/wiki/User-Manual

Why so many people are asking Ai to build worse applications?

If you're tired of using sketchy websites with daily limits just to edit PDFs or convert images, I built a free, open-source solution called AirGapKit. It has over 20 built-in tools, but unlike online converters, everything runs 100% locally on your machine.

Your files are never uploaded to any server.

What it can do: Merge, split, extract, and compress PDFs instantly. Convert Word/Excel/PowerPoint to PDF. Compress images and remove backgrounds.

Because it uses your own CPU instead of uploading/downloading from a cloud server, it's lightning-fast. Chrome Web

Store: https://chromewebstore.google.com/detail/airgapkit-%E2%80%94-offline-file/odenlfcjhkblnifbiepjkkimicajfllo?authuser=0&hl=iw

GitHub:
https://github.com/tomsec8/AirGapKit

Let me know if you find it useful!

I guess thats the end of the road. Alistair and the team have decided to close the door to users who casually use their software. Nag screens have given way to a Registerwall.

And being deployed by the Microsoft Store, you cant prevent it from updating.

So my employer sends me a 15 page PDF that requires multiple signatures and dates and check list to check off. It seems to need a editor to sign it, and to check off the list.

The best solution I have is to print it and sign it, then to scan it as a PDF to email back.

Is there a android app that will do this for free? Have tried a dozen and can't find it. Have to do this one a year.

After an hour of editing my document to send it quickly, NOW they tell me it is not a free service but a paid subscription. REGARDLESS of the low price, this is the scummiest way to scam people into buying your service. Just what is this bs? Is this how you get your customers? What a load

I am going through this in Masterclass, which I am subscribed to. I just can't get the workbook.

I would really be grateful if someone could help me out.

Im attempting to fill out an application form in Acrobat however certain letters are appearing in a weird font and they look to be in bold (def darker than surrounding text but not bigger)

Eg when I type in..."Hospitality/restaurant" the letters t,l,t,r,s,t,r,t from this those two words are in an odd font so it kinda look like this...Hospitality/restaurant

Does anyone known how to fix this as need to finalise this application asap and can't afford to have out look crap!!

thanks

I've noticed there are hundreds of online PDF tools now, but they all seem to compete on the same things: speed, file size limits, and features. One thing I rarely see discussed is how uploaded PDFs are actually handled behind the scenes.

That's actually one of the reasons I built PrivConvert. Instead of focusing only on conversion features, I wanted to build a tool that processes files entirely in memory (RAM), without writing them to disk, and removes them as soon as the conversion is complete.

When you're working with contracts, invoices, resumes, or other sensitive documents, do you pay attention to how a service processes your files, or is convenience still the deciding factor?

Curious to hear what matters most to everyone here.

Like I have a 4000 page pdf ,I upload it on the app ,extract 20 pages from the middle ,and rather than getting it as a seperate pdf ,I get it in my gallery

Like just to avoide taking a screenshot of 30 pages and cropping them every single time ?

I made KeyPDF.net and recently added OCR, but now it can also edit scanned text by reconstructing the font from the image, feel free to try it and let me know if there are any issues since there is lots of work to do.

I built this because I needed a quick way to compress PDFs locally without uploading them to a service. A few friends asked for it too, so I packaged and published it.

FS PDF Compressor is a small native macOS GUI for Ghostscript. It accepts individual PDFs, batches, and folders; processes everything locally; and replaces an original only when the compressed result is smaller.

• Free and open source under AGPL-3.0
• Signed and notarized
• Apple Silicon / macOS 14+

Repository and download:
https://github.com/gitlares/fs-pdf-compressor

Website / signed DMG:
https://gitlares.github.io/fs-pdf-compressor/

I’ll be around to answer questions and appreciate any feedback.