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Document change review

Know exactly what changed between two document versions.

Compare specifications, procedures, datasheets, and contract appendices structurally. SpecTrace separates meaningful edits from reformatting, links every finding to the page it came from, and keeps a reviewable record of each decision you make.

  • Structural, not line-by-line
  • Every finding linked to its source
  • Formatting noise separated out
  • Decision record you can export

Documents are processed on Motifuse servers, held in a private quarantine, and scanned for malware before anything reads them. The comparison is deterministic — no language model sees your files.

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Document types read

PDF, DOCX, XLSX, CSV, plain text, plus PNG and JPEG images of scanned pages.

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Project templates

Supplier specification change, SOP revision, tender requirement update, and 7 more.

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Change types compared as values

Text, numbers, units, and dates — not just as strings that happen to differ.

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Export formats, on every plan

CSV and structured JSON, with versions, fingerprints, coverage, and method limits attached.

The real product, on this page

Compare two versions now, without an account.

This is the SpecTrace workspace. Create a project, upload a baseline and a revision, and work through the findings — the free tier is a working tool, not a preview.

Server-side processing

Files are uploaded, quarantined, and malware-scanned before anything reads them. Guest work stays in this browser and is deleted after 7 days.

  • PDF · DOCX · XLSX · CSV · TXT · PNG · JPEG
  • Private to your account
  • Delete a project, delete its files
Loading SpecTrace…

Scanned documents and photographs need text recognition, which is a Pro capability. Recognition quality varies with the scan, so findings that depend on it are marked with lower confidence and shown alongside the region they came from.

From two files to a decision

How a review actually runs

SpecTrace is built around the judgement that follows a comparison, not the comparison itself. Each step leaves something behind — which is what turns a read-through into a record.

  1. Step 1

    Create a project

    Start from a project template — supplier specification change, SOP revision, tender requirement update, contract appendix, and more — or set it up yourself, with your reference numbers, tags, priority, and confidentiality level.

    A project with your context attached

  2. Step 2

    Add the two versions

    Upload the baseline you already accepted and the revision you have been sent. Earlier versions are kept, never overwritten, so you can look back at how a document reached its current state.

    A version history, not an overwrite

  3. Step 3

    See what changed

    SpecTrace compares the documents structurally rather than line by line, so a moved paragraph reads as a move and a reformatted table does not fill your review with noise. Numbers, units, dates, and amounts are compared as values.

    Meaningful changes, separated from noise

  4. Step 4

    Review and decide

    Work through the findings one at a time: confirm a change, reject it as formatting noise, adjust how important it is, write down what it means, and record what you are going to do about it.

    A decision against every finding

  5. Step 5

    Export the record

    Download the findings and your decisions as CSV or structured JSON. Each export identifies the project, source versions, analysis date, document fingerprints, coverage summary, and the limitations of the method.

    A review record you can hand over

See it work

Findings, evidence, record

The three screens a review passes through. Note what the first one shows: a low-confidence finding and thirteen formatting-only changes, both labelled — because a preview of five clean hits would misrepresent how documents actually read.

SpecTrace compares the two versions structurally, so a moved paragraph reads as a move and a restyled table does not fill your review with noise. Numbers, units, dates, and amounts are compared as values — and what it is unsure about is labelled as unsure.

Why not a file diff

What changes about a document review

Comparison tools are not scarce. These are the six things that stop being your problem once findings carry their evidence and your decisions stay attached to them.

Stop reading two PDFs side by side

A supplier sends Rev C and says 'minor updates'. Finding the one clause that moved a pressure rating means reading forty pages twice. SpecTrace surfaces the differences and tells you which ones carry a value change.

Structural comparison, not line-by-line

Reformatting stops drowning the review

A generic file-diff reports every difference, including the thousands caused by a new template. SpecTrace separates formatting-only changes so what remains is the handful that need your judgement.

Noise counted, then set aside

Verify before you accept

Every finding keeps the baseline wording, the revised wording, the page or section reference, and the detected value change together. You confirm what the tool found instead of trusting it.

Source-linked evidence on every finding

Uncertainty is shown, not hidden

A clean text PDF extracts reliably; a poor scan does not. SpecTrace records a confidence level per finding and marks the doubtful ones prominently rather than presenting them as fact.

Confidence recorded per finding

Remember why you agreed

Six months later, nobody can say why Rev C was accepted. The decisions, the notes, and the follow-up actions stay attached to the comparison that produced them.

Decisions kept with their evidence

Your data comes back out

Findings and decisions export to CSV or structured JSON on both Free and Pro, with the source versions, fingerprints, coverage, and method limits attached to the file.

CSV and JSON on every plan

Documents it reads

Built for the files that actually arrive

PDF, Word, Excel, CSV, and plain text, plus PNG and JPEG images of scanned pages. Spreadsheet comparisons keep sheet and cell references; PDF and Word findings keep page and section references, so a finding always points back at something you can open.

Scanned documents and photographs need text recognition, which is a Pro capability. Recognition quality varies with the scan — so findings that depend on it are marked with lower confidence and shown alongside the region they came from, for you to confirm before accepting.

PDF

Page and section references kept on every finding.

Word (DOCX)

Structural comparison; a moved paragraph reads as a move.

Excel (XLSX) & CSV

Sheet and cell references preserved in the findings.

Plain text

Compared as content, not as a byte stream.

PNG & JPEG scans

Text recognition on Pro; findings marked with lower confidence.

Values, not strings

Numbers, units, dates, and amounts compared as what they mean.

Who it is for

One person doing careful work

SpecTrace is built for an individual reviewer, not a review committee — every project belongs to your account alone. These are the six roles the workflow was designed against.

Engineer reviewing a supplier revision

The situation. A datasheet arrives at Rev C with 'minor clarifications', forty pages long, and a delivery decision waiting on it.

What they get. The pressure rating, material grade, and delivery window changes surfaced with their page references, and a note against each one recording what has to happen before acceptance.

  • Datasheets
  • Value changes
  • Page references

Procurement, tender requirement update

The situation. An issuing authority republishes a tender document days before submission, with no change log.

What they get. A list of what actually moved between issues, separated from the restyling, so the bid team reworks the three sections that changed rather than re-reading the whole pack.

  • Tenders
  • Reissued documents
  • CSV export

Quality or laboratory professional

The situation. An SOP is revised and every controlled copy has to be reconciled against the previous approved version.

What they get. A structured comparison with the changed steps identified, a decision recorded against each, and an export that states the source versions and document fingerprints.

  • SOP revisions
  • Decision record
  • Fingerprints

Contract reviewer

The situation. Counsel returns a marked-up appendix, and the redline does not survive the round trip through three file formats.

What they get. A comparison that reads the documents as they are, with amounts, dates, and clause text compared as values, and the wording on both sides kept side by side.

  • Appendices
  • Amounts & dates
  • Clause text

Safety & compliance specialist

The situation. A standard or internal procedure is updated and the affected requirements have to be identified and signed off.

What they get. Findings ranked by significance, the low-confidence ones flagged for manual checking, and a record of what was reviewed and by when.

  • Standards
  • Significance
  • Follow-up actions

Independent auditor or consultant

The situation. Client documents arrive in whatever state their systems produced, and the engagement is judged on the report you hand back.

What they get. A repeatable review method, a written record of every decision, and an export identifying the versions compared and the limits of what the method could read.

  • Client work
  • Repeatable method
  • Stated limits

How we build it

Where your documents go, stated plainly

SpecTrace is processed on our servers, and this page says so rather than borrowing the privacy language of products that run in a browser. Here is exactly what that means.

Processed on Motifuse servers

Not in your browser — and we say so

Files are uploaded, held in a private quarantine, checked for malware before anything reads them, and stored privately against your account. Describing this as browser-local processing would be untrue, so we do not.

Retained for a stated period

Deleted when you delete the project

Files are retained for the period your plan allows. Work started without an account stays in that browser and is deleted after 7 days. Deleting a project deletes its files.

Deterministic comparison
The comparison is performed by parsers and rules, not by a language model. What SpecTrace says changed is derived from the documents, and the source page is always one click away.
Nothing sent to an AI provider
Not in the current product. If AI-assisted explanations ship, the feature will be opt-in and its data handling described before release.
Your documents stay yours
Projects belong to one account. Files are not shared with other users, and you can delete a project and everything in it at any time.
Decision support, not sign-off
SpecTrace helps you find and record changes. It does not replace engineering, legal, safety, or regulatory review, and it does not certify that a document is compliant.

Free and Pro

Free is a working tool, with real limits

The complete comparison and review workflow — three projects, five comparisons a month, findings review, notes, and CSV and JSON export — costs nothing. Pro raises the ceilings and adds text recognition for scanned pages.

Free

Compare documents and review findings on your own, with modest limits.

  • Included3 active projects
  • Included5 comparisons per month
  • IncludedDocuments up to 10 MB, 25 pages
  • IncludedText, numeric, unit, and date change detection
  • IncludedFindings review and personal notes
  • IncludedCSV and JSON findings export
  • Included14-day file retention
  • Not includedOCR for scanned documents
  • Not includedAI-assisted explanations

Pro

Most popular

For professionals who review specification and contract changes regularly.

₹199/ month

  • Included100 active projects
  • Included200 comparisons per month
  • IncludedDocuments up to 100 MB, 500 pages
  • IncludedOCR for scanned documents and images
  • PlannedAI-assisted change explanations and summaries
  • PlannedImpact assessment and follow-up actions
  • PlannedFull version history and cumulative comparison
  • IncludedCSV and JSON findings export
  • PlannedPDF, DOCX, and XLSX reports
  • Included365-day file retention
  • PlannedSaved personal templates and filter views
  • PlannedCustom report branding

Business

Available on request

A requirements-led rollout for organisations that need SpecTrace beyond an individual account.

Pricing on request

  • IncludedPro comparison workflow as the starting point
  • IncludedUsage, retention, onboarding, and support scoped with you
  • IncludedSecurity and procurement requirements assessed
  • PlannedShared review workflows scoped where required
Contact sales

Not available for self-service. Requirements are reviewed individually.

Enterprise, built around your review process

Tell us how your organisation reviews documents. We will scope security, retention, rollout, and workflow requirements with you; Enterprise is not an off-the-shelf self-service plan.

Discuss Enterprise

What it does not do

The boundaries, before you rely on it

A tool used on specifications and contracts has to be honest about its edges. These are ours, in the same place as the capabilities — not in a footnote.

  • It is a single-user tool. There are no shared projects, invitations, reviewer assignment, or approval chains.
  • It has no public API, no API keys, and no webhooks.
  • It does not sign documents, and finalising a review is not a legally binding signature.
  • It does not certify compliance with any standard, and it does not replace professional review.
  • Extraction from poor-quality scans is unreliable — and SpecTrace says so on the findings it is unsure about rather than hiding it.
  • PDF, DOCX, and XLSX report generation is not available. Findings export as CSV or structured JSON.

Proof, not adjectives

How to check any claim on this page

SpecTrace is new, and a page of five-star quotes would tell you nothing about whether it can read your datasheet. Here is what the claims above rest on, and where each one can be verified.

We publish no accuracy percentage, no customer count, and no testimonial we cannot attribute — a figure measured on our test documents would say nothing useful about yours. When there are real quotes, they will appear here with a name against them.

Questions

Before you upload a document

Where files go, how reliable extraction is, what the free tier includes, and what happens to your data afterwards.

Reviewing documents as an organisation?

Shared review is not in this version. Tell us how your process works and we will be straight about whether SpecTrace fits it today.

Start with the revision on your desk

Upload two versions and see what actually changed.

Three projects and five comparisons a month, free, with no account required to try it. Every finding keeps its evidence, and every decision you record comes back out as CSV or JSON.

  • No card required
  • No language model sees your documents
  • Delete a project, delete its files
  • Private workspaces are ad-free