RoseLab

Free online tools for your office

RoseLab brings together free productivity tools for anyone working with documents: compare PDFs side by side, merge multiple files into one and more — all directly in your browser, no upload, no installation.

View toolsView plans
No installation · No sign-up · Your files never leave your computer
contrato_v1.pdf
contrato_v2.pdf
roselab.com.br/comparar
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Tools

Free PDF tools

Everything runs in your browser — no upload, no installation.

Principal

Compare PDFs

Compare two PDFs side by side with synchronized scrolling. Find differences between contracts, reports, blueprints, proposals and bids — all processed in your browser, without sending files to any server.

Open comparatorGrátis

Merge PDFs

Combine multiple PDF files into a single document, in the order you choose.

Open Merge PDF

Split PDF

Split a PDF into multiple files by page ranges or every N pages, and download everything as a .zip.

Open Split PDF

Compress PDF

Reduce your PDF's file size to send by email or attach to systems with upload limits.

Open Compress PDF

Remove/Extract pages

Choose page ranges to remove from or extract from a PDF and download the result instantly.

Open Remove pages

Convert PDF ↔ Images

Turn PDF pages into PNG images or build a PDF from multiple images.

Open Convert PDF ↔ Images

PDF → Word/Text

Extract the text from a PDF and download it as a Word document (.docx) or plain text (.txt).

Open PDF → Word

Verify integrity

Check the fingerprint (SHA-256 hash) of any file and prove that a document has not been altered — the public check for RoseLab reports.

Open Verifier

Clean Word

Remove metadata, comments and tracked changes from a .docx before sending — author, company and editing time won’t travel with the file.

Open Word Cleaner

Character Counter

Count characters (with and without spaces), words and standard pages of a Word, PDF or pasted text — with configurable page size.

Open Character Counter

Compress Word

Shrink a .docx by re-encoding images and removing extras — without changing text or formatting. Perfect for e-mail and upload size limits.

Open Word Compressor

Fill Word Template

Turn a .docx into a template with variable fields and generate filled documents instantly — the data never leaves your computer.

Open Template Filler
Features

Everything you need to work with PDF

Complete, fast and hassle-free tools — pick a tool below.

#1

Synchronized scrolling

Navigate both PDFs at the same time, at the same position, without losing your place.

#2

100% private, no upload

Your files never leave your computer. Everything is processed directly in the browser.

#3

Completely free

Compare PDFs up to 20 pages at no cost, with no sign-up and no limit on comparisons.

#4

Unlimited Pro plan

PDFs with no page limit and unlimited use of every tool.

#5

Light and dark theme

A comfortable interface for reviewing documents over long periods.

#6

Available in 10 languages

Portuguese, English, Spanish, French, Chinese, Arabic and more.

How it works

How it works

Simple, fast and right in your browser — nothing to install.

1
Passo 01

Open both PDFs

Load the original PDF in one panel and the updated version in the other.

Concluído em segundos
2
Passo 02

Turn on synchronized scrolling

Both documents move together, page by page, at the same speed.

Concluído em segundos
3
Passo 03

Compare and spot the differences

See side by side what changed between versions — no need to print anything.

Concluído em segundos
Casos de Uso

Built for people who work with documents

From law firms to HR teams, RoseLab speeds up PDF review.

Área Jurídica

Lawyers and law firms

Compare drafts, contracts and filings to spot changes between versions.

Fluxo otimizado & seguro
Contabilidade & Finanças

Accountants and finance

Check balance sheets, reports and statements without extra software.

Fluxo otimizado & seguro
Acadêmico & Pesquisa

Students and researchers

Compare versions of papers, articles and study materials side by side.

Fluxo otimizado & seguro
Empresas & Governança

Companies and HR

Review proposals, bids and internal documents quickly.

Fluxo otimizado & seguro
FAQ

Frequently asked questions

With RoseLab, just open the two PDF files in the side-by-side panels. Scrolling is synchronized automatically, letting you compare page by page with no install and no cost.

Ready to compare your PDFs?

Free for PDFs up to 20 pages. No sign-up, no install, no upload.

Compare PDFs Now
No installation No upload 100% private