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Compare PDF for engineers

Updated July 2026

Arthize lets engineering teams compare two PDFs in a private workspace — free, with no watermark. Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance.

Why engineers compare two PDFs

An engineer merges drawings and specs into one submittal, compares two revisions to catch changes, and archives the final set as PDF/A so it stays readable for the project's lifetime.

Built for drawings. Whether it's drawings, specifications, reports, Arthize's compare pdf keeps the work inside your private workspace. Project documents can be commercially sensitive; a private workspace protects designs and client data.

What matters when you compare two PDFs

Comparison highlights text differences between two versions of a document.

It is the fast way to review contract or draft revisions.

Both files are processed privately and deleted after the job.

How to compare two PDFs

  1. 1

    Open the compare tool

    Sign in and open the Compare tool.

  2. 2

    Add both PDFs

    Upload the original and the revised version.

  3. 3

    Compare

    Arthize highlights the differences between them.

  4. 4

    Review

    Scan the highlighted changes side by side.

Common questions

How do engineers compare two PDFs for free?
Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance. On Arthize it's free with no watermark, and the file is deleted after the job — which is why engineering teams can use it for drawings without a confidentiality risk.
Is it private to compare two PDFs sensitive drawings?
Yes. Project documents can be commercially sensitive; a private workspace protects designs and client data. Files are processed inside your private Arthize workspace and deleted after the job.
How do I compare two versions of a PDF?
Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance. On Arthize it's free with no watermark and processed privately.
Can I see what text changed between two PDFs?
Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance. On Arthize it's free with no watermark and processed privately.

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