2026-09-08
Merging PDFs is one of the most common file tasks there is — combining scanned pages, stitching together a multi-part report, or assembling a set of invoices into one document — and it's also one of the most common places people accidentally upload something sensitive to a random website to do it.
| Tool | Drag-to-reorder before merging | File size limit | Runs fully in your browser | Account required |
|---|---|---|---|---|
| iLoveDevTools | Yes | No hard limit (browser memory only) | Yes | No |
| iLovePDF | Yes | Free tier capped, larger files need a paid plan | No (files uploaded to their server) | No for basic use |
Merge PDF lets you drop in as many files as you need, drag them into the exact order you want, and combine them into a single PDF instantly — entirely in your browser. There's no upload step, which matters most for merging things like signed contracts, ID scans, or financial statements.
The most recognizable name in browser-based PDF tools, and its Merge PDF tool is genuinely easy to use. The tradeoff is architectural: your files are uploaded to their servers to be processed, and the free tier caps file size and daily usage before nudging you toward a subscription.
For a quick merge without uploading anything, iLoveDevTools does the job with no size ceiling tied to a free-tier limit. If you specifically need iLovePDF's broader ecosystem of chained conversions in one workflow, it's a capable, well-established option.