PREP
Continual Engine's cloud platform for PDF and document accessibility remediation, with AI auto-tagging and OCR built in.
Jobs Accessibility OCR Convert
Operated by Continual Engine
Where your files are processed
Reported to upload your files
The vendor states that files are uploaded to their servers. We have not independently tested this.
It is a hosted platform, and the documented workflows include a browser workspace and HTTP APIs for its Auto Tag and Checker services. The browser workspace is an interface rather than a browser JavaScript SDK, and the programmatic label belongs to those documented APIs rather than to the workspace. Offices and cloud-provider names do not establish a processing region or a retention period, so both stay unknown.
What it does
PREP is Continual Engine's remediation platform for accessibility work: documents are uploaded to a browser-based workspace, an AI pass proposes the tag structure, a person reviews and corrects it, and the platform validates the result against a chosen standard and issues an accessibility report. It is aimed at volume — universities, publishers and government teams remediating course materials and public documents — and it is built for that workflow in ways a desktop editor is not: several people can work on one document at once, documents can be assigned to reviewers, and OCR is a mode inside the same tool rather than a separate step for scanned material. Continual Engine also sells remediation as a service, and exposes parts of PREP as APIs, so the same vendor can take the work off your hands entirely.
Best for: Accessibility teams facing a backlog rather than a one-off document. The collaboration and assignment features, the built-in OCR for scanned material and the per-document compliance report are all aimed at producing accessible documents at institutional scale, and the vendor's own customers describe replacing an outbound remediation service with it. A reader who needs to fix one PDF will find the whole apparatus is aimed at somebody else.
Worth knowing: Pricing is quoted rather than published. The answer to "How much does PREP cost?" on the product page is an email address, so budgeting starts with a conversation and the vendor's "up to 50%" cost-saving figure cannot be compared against anything. The compliance language needs reading twice: the page states that PREP's "remediation output is 100% compliant with ADA/508/EAA regulations and WCAG 2. Everything uploaded leaves your environment and is processed on the vendor's cloud, and the platform is aimed at exactly the confidential material — student records, healthcare forms, insurance documents — where that needs a deliberate decision. There is also a services business behind the software, which is worth knowing before a conversation about scale, because the same team that sells you the platform also sells you the remediation.
Details, and where each comes from
Vendor statements, our own reading of their pages, and the things nobody has established yet, each answered separately. Where we have not confirmed something it says so rather than guessing, and a row nobody has established is greyed out.
- Versions covered
- Web
- Website
- continualengine.com
- Requires an account
- Yes
- Free tier
- Not verified
- Watermark on the free tier
- Not verified
- Maximum file size
- Not verified
- Batch processing
- Yes
- Data residency
- Not verified
- Open source
- No
- Self-hostable
- Not verified
- Licence
- Commercial SaaS, quoted rather than published
- Redaction
- No redaction feature
- Programmatic access
- Browser JavaScript · HTTP API
- Last availability check
- Responded in 2358 ms 16 October 2026
Checked automatically by our own runner, not reported by the vendor. 100% of our last 30 checks got a response.
What the redaction verdict rests on
From the vendor's own documentation, read 22 September 2026. Not tested by us.
What that does not establish: Recorded as `none` on absence for a tool that certainly edits documents, which is why it needs saying plainly. PREP's documented work is structural — auto-detect tags, review and modify "the page content structure", and correct flagged accessibility issues — and the feature list includes conversion of PDFs to Text, Word, HTML and ePub. None of that is described as removing content, and a remediation platform is not a redaction tool. What it does not establish: that an editing interface of this kind cannot delete content, which is a capability question rather than a redaction-feature question, and one nobody should read this verdict as answering.
What the vendor says
Claims are labelled rather than repeated as fact. Where we have checked something ourselves, it says so and shows when. Checked means we read the vendor's own page and it says what we recorded — not that we tested the behaviour, unless the note says we did.
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“PREP's remediation output is 100% compliant with ADA/508/EAA regulations and WCAG 2.2 AA guidelines.”
Checked by us — could not be settled Read 22 September 2026
Present verbatim, under the heading "Look Beyond Compliance. Achieve Inclusion!", immediately followed by the argument that this "helps you avoid any lawsuits". Recorded as unverifiable rather than confirmed or refuted because the claim as written cannot be tested by a reader: "100% compliant" has no stated scope, no stated standard edition and no stated process, and the same page elsewhere describes something narrower — automatic tag detection that "saves you more than 60% turnaround time", which implies a human review step that the 100% figure does not. A conformance claim of this shape is the single most common thing this index exists to hold at arm's length, and it sits directly beside the platform's own most defensible feature, which is that a person reviews and corrects the automated pass.
Standing: Re-read and matched byte for byte
Check it yourself: the source, the SHA-256, and how we checked
- From
- the text a browser renders
- SHA-256
- cec906f956756ae95799160d365fd8030a2de318dde63c117916574eadc67193
How we checked: https://continualengine.com/prep-pdf-remediation-software/ rendered in headless Chrome with scripts/render-page.mjs on 2026-09-22 (visible text 12467 bytes) and the claim checked against that rendered text. sourceHash is the SHA-256 of that text.
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“Powered by sophisticated AI-based auto-tag detection, PREP's document remediation software accelerates the time-consuming and tedious process of tagging nested lists and table of contents (ToC), saving you more than 60% turnaround time.”
Checked by us — could not be settled Read 22 September 2026
Present verbatim. The mechanism described — auto-detecting nested list and table-of-contents structure — is the part of remediation that is genuinely repetitive and genuinely automatable, so the claim is plausible in a way the compliance claim is not. The percentage itself is the vendor's own, with no baseline, no sample and no measurement described anywhere on the page, and "turnaround time" is not defined against a process. The same page makes a second, harder claim alongside it, that the system "gets more accurate over time", which describes learning from reviews and would mean documents submitted early and late are handled differently. Both are recorded as the vendor's numbers rather than as findings.
Standing: Re-read and matched byte for byte
Check it yourself: the source, the SHA-256, and how we checked
- From
- the text a browser renders
- SHA-256
- cec906f956756ae95799160d365fd8030a2de318dde63c117916574eadc67193
How we checked: Same rendered page and hash as the claim above; the claim was checked against that text and the page was searched for a stated methodology behind the 60% figure.
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“PREP's document remediation platform is cloud-based, allowing easy access at any time, from anywhere, simply by using a browser. It also means you do not need to install any software.”
Checked by us — the source says this Read 22 September 2026
Confirmed, and it is the most consequential factual claim on the page rather than the marketing. It is corroborated by the platform's own three-step workflow — upload, review, download — and by the navigation offering an existing-user sign-in. It is also the reason processesLocally is false and requiresAccount is true: this is a hosted workspace with no installable edition described, so every document uploaded to it leaves the reader's environment. Nothing on the page describes an on-premises or self-hosted deployment, which is a meaningful difference from the desktop remediation products in this index.
Standing: Re-read and matched byte for byte
Check it yourself: the source, the SHA-256, and how we checked
- From
- the text a browser renders
- SHA-256
- cec906f956756ae95799160d365fd8030a2de318dde63c117916574eadc67193
How we checked: Same rendered page and hash as the claims above; the delivery description was cross-checked against the three-step workflow on the same page and the sign-in link in the site navigation.
Each claim is quoted from the vendor's own pages. This section describes what we have and have not checked — it is not a judgement about anyone.
Sponsorship is distribution, not an endorsement or a promise of search rankings, AI citations, traffic, or sales. This listing is a free entry, compiled from published sources.
Related reading
- Checking a PDF for accessibility — what makes a PDF accessible, and how it is checked.