Drop in several PDFs, drag them into the order you want, and export one clean combined file. Merge uses pdf-lib's structural page copy, so every page keeps its real text, fonts and original size — nothing is flattened into an image, and the text in the result stays selectable and searchable.
Every merge happens in your browser, so your documents are never uploaded to a server. Nothing is stored, transmitted, or used for training — flip on airplane mode and Merge still works. That matters when the files are signed contracts, medical records, or financial statements you can't put on someone else's machine.
Add the files you want to combine — one at a time or a whole batch. Each loads straight into your browser tab and shows a first-page thumbnail; nothing is sent anywhere, so there are no upload waits or server size caps.
Reorder the files by dragging the cards until the sequence is right — cover first, appendix last, whatever you need. The page count for each is shown so you know exactly what the combined document will contain.
One tap concatenates everything into a single PDF on your device, preserving each page's text, fonts and dimensions. The finished file saves to your downloads — still never uploaded.
A court submission often means stitching a brief, signed declarations, and a stack of exhibits into one clean PDF in a precise order. Merge lets you drag the files into sequence and combine them on your laptop, so privileged documents never pass through a third-party server. Because the page copy is structural, the exhibit text stays searchable for the court and for opposing counsel.
Patient packets and personnel files arrive as separate scans and forms that need to live as a single document in the EHR or HRIS. Merge combines them in the browser, so PHI and personal data stay inside your HIPAA or NDA boundary instead of touching an upload service. Mixed page sizes from different scanners are preserved, so nothing gets stretched or cropped.
Month-end often means merging a cover memo, several account statements, and supporting invoices into one file for an auditor or board pack. Drag them into the right order, merge, and download — with the numbers still selectable so reviewers can search and copy. Nothing leaves the machine, so client and vendor figures stay private.
You scanned a document in three pieces, or you want one PDF that holds a boarding pass, a booking, and an insurance page for a trip. Drop them in, reorder, and get a single file with no signup and no install. It's free for everyday merges, and your documents stay on your device.
Merge loads each PDF with pdf-lib and uses copyPages to lift every page — its text objects, embedded fonts, vector graphics and exact dimensions — into a brand-new document, then saves the result. This is a structural concatenation, not a re-render, which is why the output keeps selectable, searchable text and stays close in size to the sum of the inputs. The honest trade-off is the flip side of that fidelity: because pages are copied intact rather than rebuilt, Merge concatenates whole files in the order you set and doesn't re-flow, deduplicate, or shrink content. If you need to drop or rearrange individual pages, do that first in Organize PDF; if the combined file is larger than you'd like, run it through Compress afterward.
Most free "merge PDF" sites work by uploading every file to their servers, combining them there, and sending one back — which means a signed contract, a medical record, or a bank statement briefly lives on someone else's infrastructure under their retention and training terms. Merge never does that: the files are read and combined entirely in your browser, so they're never uploaded, stored, or used for training. For anyone handling documents under an NDA, HIPAA, or a confidentiality duty, "never uploaded" isn't a slogan — it's a fact you can verify by turning on airplane mode and watching the merge still complete.
No. Merge runs entirely in your browser using pdf-lib, so your files are read and combined on your own device. Nothing is uploaded, stored, or transmitted to any server. You can confirm it by switching to airplane mode and merging offline.
Yes, merging is free with a generous tier and no signup to try — the free tier combines up to 8 PDFs at once, up to 50 MB each. Pro ($9/mo or $69/yr, or $4/mo for this app alone) raises that to 100 PDFs and 200 MB per file, plus unlimited history across every nimbril tool.
It keeps the text. Merge does a structural copy of each page with pdf-lib's copyPages, so text, fonts, vectors and the original page sizes all carry over intact — nothing is rasterized. The combined PDF stays selectable and searchable, just like the originals.
Yes. Each PDF appears as a card with a thumbnail and page count, and you drag the cards into any order you like before merging. The final document follows exactly the sequence you set.
Yes. Because each page is copied at its native dimensions rather than forced to one size, a merge can hold Letter, A4, legal and landscape pages side by side. Every page keeps the size it had in its source file.
Because nothing uploads, there are no server-imposed caps. The free tier handles up to 8 files at 50 MB each (30 MB on phones); Pro goes to 100 files at 200 MB each. The real ceiling is your device's available memory, since the whole job runs in the browser tab.
Yes. All processing happens locally in your browser, so Merge keeps working with no internet connection. Working offline is also the proof your files are never uploaded — there's nowhere for them to go.