PDF Comparison That Understands PDFs
Reticl detects real text changes while ignoring layout noise. Our layout-aware comparison works across standard and ocr modes so you can review documents with confidence.
Why Traditional PDF Diff Tools Fail
PDF files do not store paragraphs or document structure. They store positioned text on a page.
Because of this, traditional diff tools often lose alignment when layouts shift, producing large blocks of false changes that make document reviews harder.
Layout Shifts
A single line wrap can cause an entire paragraph to appear deleted and reinserted.
Table Movement
When table rows shift position, many tools lose alignment and produce unreadable diffs.
Formatting Changes
Font or spacing adjustments can generate large blocks of false differences.
Scanned Documents
Without an embedded text layer, most comparison tools cannot analyze the document at all.
x: 120, y: 450
PDFs Are Visual Layouts, Not Structured Documents
Unlike Word documents, PDFs do not store paragraphs or logical structure. Each word is placed on the page using coordinates within a rendering system.
When tools extract text without considering layout, the context is lost. Reticl uses the page geometry to reconstruct document structure before performing the comparison.
Layout-Aware Comparison
Reticl processes documents in stages to produce precise, readable diffs.
1. Text Extraction
Reticl extracts text from each page, using Standard extraction for digital PDFs and OCR mode when necessary.
2. Structural Grouping
Words are grouped into logical blocks such as paragraphs and tables using spatial analysis.
3. Cross-Document Matching
Blocks are matched between documents even if their position or page changes.
4. Word-Level Diff
Only the exact words that changed are highlighted, producing clean and readable comparisons.
See the Difference
Traditional Tools (Naive Text Comparison)
The company shall indemnify the employee against all liability incurred during their employment.
The company shall fully indemnify the employee against all liability incurred during their employment.
A single word change causes the entire paragraph to appear deleted and reinserted.
Reticl (Structural Word Comparison)
The company shall fully indemnify the employee against all liability incurred during their employment.
Reticl isolates the exact word that changed, making the revision immediately clear.
Compare Scanned Documents
OCR + deeper analysis for scanned or complex PDFs. Reticl extracts the text automatically so the comparison can still proceed.
Scanned Documents
Reticl reads scanned pages and extracts text before performing the comparison.
Image-Based PDFs
Documents composed of images can still be compared accurately.
Mixed Documents
Works even when a file contains a combination of digital text and scanned pages.
Built for Real Document Review
When accuracy matters and manual review takes too long.
Regulatory & Labeling
Compare approved label text with printed packaging composites, even when the artwork is scanned.
Legal Revisions
Detect untracked changes between contract versions before execution.
Financial Reports
Identify real numerical changes between filings despite formatting shifts.
Enterprise QA
Automatically verify generated PDFs against expected text and layout requirements.
Try Reticl Free
Run a free comparison in seconds. See how clean and readable a PDF diff can be.
Looking for API integration? Coming soon.
Reticl is a PDF comparison tool designed for engineers, legal teams, and regulatory compliance professionals. Traditional diff tools often produce noisy results when layouts change or when documents are scanned. Reticl uses layout-aware analysis and OCR to detect real textual differences between PDFs, producing clean and readable comparisons across digital and scanned documents.