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Compare PDF for tax preparers

Updated July 2026

Arthize lets tax professionals 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 tax preparers compare two PDFs

A tax preparer merges the return with its schedules and supporting documents into one client file, extracts figures from a PDF form into a worksheet, and password-protects the final package.

Built for tax returns. Whether it's tax returns, W-2s and 1099s, schedules, Arthize's compare pdf keeps the work inside your private workspace. Returns contain Social Security numbers and income data; private processing and deletion are essential.

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 tax preparers 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 tax professionals can use it for tax returns without a confidentiality risk.
Is it private to compare two PDFs sensitive tax returns?
Yes. Returns contain Social Security numbers and income data; private processing and deletion are essential. 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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