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Comment by asimovDev

5 hours ago

How does it fare with PDFs consisting entirely of images? Any PDF tool was struggling with compressing a passport scan (made with iPhone so might've contributed somehow, knowing Apple and PDFs) I had to cut down in size. Ended up using ImageMagick cause any Ghostscript based tool couldn't get it below 7 MBs from the original 28MB which, although, pretty good, was still too high and I could tell there was still plenty of detail that could be discarded without losing the eligibility of the document. I had to compress it with ImageMagick at the end, cut it down from 28MB to 3MB.

Also does Adobe have some kind of patent/copyright on PDF forms? I don't think I saw any free tools that can edit fillable fields / tables in PDFs. I don't see any mention of forms in the Suite section of your app either. Is it just stupidly difficult / annoying to implement ?

Good questions.

Image-only PDFs (scans): These are the hardest case. If a PDF is basically high-res images (like iPhone scans), browser-based tools have limits compared to ImageMagick, which has much finer control over resampling and JPEG compression. Ghostscript-style pipelines help, but ImageMagick often wins if you’re willing to discard more detail. Improving this is on the roadmap, but it’s genuinely tough in-browser.

PDF forms: Adobe doesn’t own forms, but editable PDF forms are extremely complex and poorly standardized. Many free tools avoid true form editing because it’s easy to break files. That’s why I haven’t enabled it yet—possible, just time-consuming and error-prone.