What's the difference between Personal and Studio?

Personal ($39) is for one person — unlimited use on one active device at a time. Activate on a new device and the old one signs out. Studio ($199) is for teams and commercial client work — unlimited team members, early access to new tools, and a commercial license.

Do I need an account?

No. Use any tool free up to 5 times per day on compute-heavier tools, and unlimited on lightweight ones. No card, no account, no signup required.

Where are my files processed?

Right on your device. Files never upload to any server. Everything runs in your browser — you can verify in DevTools → Network.

What happens if I use my Personal license on a second device?

The new device activates and the old device signs out. Your license key stays the same — you just move it between devices as needed. No limit on how often you switch.

Does this work on my phone?

Yes. Every tool works on iPhone, Android, tablet, and desktop.

What if I want a refund?

30-day money-back guarantee on both tiers. No questions asked. Email sales@cipherforces.com.

Will you add more tools?

Yes. New tools ship regularly. Your license includes every tool we ever release — Studio members get early access.

Pdf

Compare PDFs

Visual pixel-level or text line-level diff between two PDFs, page by page.

PrivateWorks OfflineNo Account

100% Private Works Offline Instant

Original PDF

Drop original PDF

or click to browse

Max 100MB

Revised PDF

Drop revised PDF

or click to browse

Max 100MB

Compare two PDFs

Upload an original and revised PDF to see the differences highlighted visually or as a text diff.

0/3free today

Deep dive

About Compare PDFs.

See the Differences Between Two PDF Files

Upload two PDFs and CipherForces PDF Compare shows the differences in two modes:

Visual mode: Renders each page of both PDFs at the same resolution and tints differing pixels red, so you can see at a glance where anything changed — text, layout, images, or spacing.
Text mode: Extracts text from both PDFs using pdf.js and runs a line-level diff, marking added and removed lines per page.

Comparison runs page-by-page on the shared page range; if the two PDFs have different page counts, the extra pages are noted but not diffed. Runs entirely in-browser — neither PDF is uploaded.

Common Use Cases

Contract redlines: Spot layout and text changes between two versions of a legal agreement.
Editorial review: Compare a draft and a revised manuscript.
Compliance audit: Verify changes between two dated policy documents.
Invoice reconciliation: Confirm vendor line-item changes month-over-month.

Key Features

Visual pixel diff: Rendered overlay showing every visual change, including image and layout shifts.
Text line diff: Line-by-line added/removed highlights extracted from the PDF text stream.
Side-by-side view: Left = file A, right = file B, with synchronized scrolling.
Page-count warning: If A and B have different numbers of pages, the tool flags the mismatch so you don’t miss trailing changes.

Privacy: Both PDFs are parsed and compared locally. Neither uploads.

Three steps

How to use Compare PDFs.

Upload your file

Drag and drop or click to select your file.

Choose settings

Adjust quality, size, or format options.

Download result

Your processed file is ready instantly.

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Why CipherForces

Privacy-first tools that work everywhere.

100% Private

From $39

Works Offline

No Account

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About Compare PDFs.

See the Differences Between Two PDF Files

Upload two PDFs and CipherForces PDF Compare shows the differences in two modes:

Visual mode: Renders each page of both PDFs at the same resolution and tints differing pixels red, so you can see at a glance where anything changed — text, layout, images, or spacing.
Text mode: Extracts text from both PDFs using pdf.js and runs a line-level diff, marking added and removed lines per page.

Comparison runs page-by-page on the shared page range; if the two PDFs have different page counts, the extra pages are noted but not diffed. Runs entirely in-browser — neither PDF is uploaded.

Common Use Cases

Contract redlines: Spot layout and text changes between two versions of a legal agreement.
Editorial review: Compare a draft and a revised manuscript.
Compliance audit: Verify changes between two dated policy documents.
Invoice reconciliation: Confirm vendor line-item changes month-over-month.

Key Features

Visual pixel diff: Rendered overlay showing every visual change, including image and layout shifts.
Text line diff: Line-by-line added/removed highlights extracted from the PDF text stream.
Side-by-side view: Left = file A, right = file B, with synchronized scrolling.
Page-count warning: If A and B have different numbers of pages, the tool flags the mismatch so you don’t miss trailing changes.

Privacy: Both PDFs are parsed and compared locally. Neither uploads.