Compare PDFs
Visual diff of two PDFs, side-by-side or as a colour overlay.
- PDF & Office
- Free to use
- Server processed
Add your files
0 of 2Set your options
Run Compare PDFs
Processed on our servers. Uploaded over TLS and deleted an hour later — 24 hours if you are signed in.
Add 2 files above to run this tool.
Three steps
How to use Compare PDFs
- Step 01
Pick your input
Drag in 2 application/pdf files, or drop a single ZIP holding them.
- Step 02
Configure & run
Adjust the options (mode) and click Run. We process the file on our own infrastructure — no third-party APIs in the path.
- Step 03
Download the result
A single application/pdf is downloadable below the form.
Server-processed files are encrypted at rest with a per-tenant key and deleted an hour after upload — 24 hours if you are signed in. We do not use third-party processing APIs.
About compare pdfs
Diff two PDFs visually or by text. Highlights every change. It sits in the pdf & office shelf alongside 83 other pdf & office tools, needs no account, and keeps the same behaviour whether you open it here or call it through the REST API.
It takes PDF files and gives back PDF. The work happens on our servers, and the upload is encrypted per file and deleted an hour later — 24 hours if you are signed in. The same operation is available programmatically at POST /v1/pdf/compare.
Compare PDFs questions
Where does Compare PDFs process my file?
On our own servers. This tool needs more than a browser tab can provide, so the file is uploaded over TLS, processed on our infrastructure — no third-party processing APIs are in the path — and both the input and the result are deleted within an hour.
Can I run Compare PDFs on several files at once?
Yes — select or drop as many as you need and they are handled together.
Do I need an account to use Compare PDFs?
No. Compare PDFs works without signing in, and that is not a trial — it is how the free tier works. An account only matters for things that need one to exist at all: larger server jobs against your quota, API keys, saved workflows and billing.
Can I run Compare PDFs from my own code?
Yes. Every tool on the site is reachable from the REST API with the same slug — `pdf-compare` — and the same options as this page, so anything you can do here you can automate against your own files.
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