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Merge PDFs Privately — In Your Browser, No Upload

Combine two or more PDFs into a single file without uploading any of them. Useful for assembling tax bundles, signed contract packets, or a portfolio of receipts. Because no PDF leaves your device, this is the safe option for documents containing SSNs, account numbers, signatures, or anything else you don't want sitting on someone else's S3 bucket.

No signup No file size limit Works offline Open source

Merge PDFs

Combine multiple PDFs into one. Browse all 13 converters →

Images → PDF

Combine JPG/PNG into one PDF document.

Local

Drop files here or browse

Up to any size. Multiple files OK.

🔒 stays on your device
Drop a file to enable

ForgeMyFile vs typical online converters

A side-by-side. We're not picking on a specific competitor — these are the patterns common across the category.

ForgeMyFileTypical online converter
Files uploaded to a serverNeverYes, every conversion
Files stored after conversionImpossible — nothing to storeOften retained 1–24 hours
Account / email requiredNoOften, especially for larger files
File size limitsYour device's RAMTypically 5–100 MB free tier
Works offline (after first load)YesNo
Source of conversion engineOpen-source libraries, view-source-ableProprietary server-side, opaque
SpeedLimited by your CPULimited by upload speed + queue
Page itself shows adsYes, plainly labeledYes, often disguised

Privacy, in plain language

We're going to be specific instead of saying things like "100% anonymous." That phrase is a lie on any page that loads ads — and we load ads. Here's what's actually true.

What runs entirely on your device

  • Reading your file from disk into the browser
  • The conversion itself — every one of the 13 tools
  • Saving the converted file to your downloads folder
  • The "preview" of converted text, JSON, or HTML

What does not run on your device

  • Ad scripts (when enabled by the operator) and their analytics
  • Page-view analytics, when enabled
  • The first-load fetch of Google Fonts CSS (libraries themselves are self-hosted)
  • After first load, the page works fully offline; ads do not

What we (the site operators) literally cannot see

  • Your file names
  • The contents of any file you convert
  • Which converter you used, or how often
  • Your conversion history

What ad networks may see

  • Your IP address and approximate location
  • Your user agent (browser + OS string)
  • The page you visited (URL)
  • Standard ad-serving cookies, where allowed by your browser

If you want to neutralize the ad networks too, run an ad blocker. The conversion tools themselves work either way — the privacy we offer for your files is independent of whether you block our ads.

How to use merge pdfs

  1. Drop two or more PDFsOrder is preserved. Use up/down buttons to reorder.
  2. ConvertWe append them in sequence using pdf-lib.
  3. Download the merged PDFLocal. Done.

Frequently asked questions

What's the order?

Same order shown in the file list. Use the ↑/↓ buttons to reorder.

File size limit?

None hard — limited only by your RAM. Most laptops handle 50+ PDFs of normal size.

Are the originals modified?

No, the merge creates a new file. Originals stay untouched on your device.

Are PDFs uploaded for the merge?

No. pdf-lib runs entirely in browser.

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