RFP Checklist: 35 Must-Haves for PDF & Manual Localization

Issuing a localization RFP for multilingual PDFs and technical manuals without a purpose-built checklist almost guarantees you will miss critical requirements, and discover the gaps only after production is underway. Complex documents carry embedded fonts, layered vector graphics, intricate tables, cross-references, and accessibility metadata that generic translation vendors routinely break. This guide gives procurement and localization teams a rigorous, paste-ready set of 35 requirements to include in every RFP for document localization. Each item includes the exact question wording you can drop into your next solicitation, plus a scoring rubric so evaluation stays objective. If you need a partner that already meets these criteria end to end, see how Ollang handles enterprise document localization.

Why PDFs and Manuals Need a Specialized RFP

Common failure modes in multilingual document workflows

Standard translation RFPs assume the source content is clean, editable text. PDFs and manuals are rarely that simple. Scanned legacy documents arrive as raster images with no selectable text. Engineering manuals contain callout boxes overlaid on diagrams, tables that span multiple pages, and hyperlinked tables of contents that must remain functional in every target language. Right-to-left scripts like Arabic and complex scripts like Thai require not just translation but full layout mirroring and line-breaking logic that many vendors cannot automate.

When these requirements go unspecified, teams discover broken links, garbled tables, missing accessibility tags, and fonts that fail to render, often weeks after delivery. According to the PDF Association, documents that lose their PDF/UA conformance during translation expose organizations to accessibility compliance risk across the EU and the United States.

How a structured checklist reduces vendor risk

A structured checklist forces vendors to declare capabilities upfront rather than promising broadly and under-delivering. It also creates a consistent scoring framework so evaluators compare apples to apples. Teams that evaluate vendors against explicit, weighted criteria report shorter selection cycles and fewer post-award change orders.

Shortly after you issue the RFP, consider scheduling a live walkthrough with a shortlisted provider to validate technical workflows and sample outputs, for example, you can request a technical walkthrough with Ollang.

Section 1: Document Ingestion and Extraction (Items 1-7)

Advanced OCR and vector text extraction

Your RFP should confirm that the vendor can ingest both native-digital PDFs (with selectable vector text) and scanned documents requiring optical character recognition. The distinction matters: vector extraction preserves font metadata and positioning, while OCR introduces character-accuracy risk. Ask vendors to state their OCR accuracy benchmarks and whether they support mixed-mode documents where some pages are native and others are scanned.

Paste into your RFP:

1. Describe your process for extracting text from native-digital PDFs versus scanned/raster PDFs. What OCR engine(s) do you use, and what is your stated character accuracy rate for Latin, CJK, and Arabic scripts?

On-image text detection and replacement

Technical manuals frequently embed text directly into screenshots, diagrams, and annotated photographs. The vendor must detect this text, translate it, and re-render it within the image without degrading resolution or altering surrounding graphics.

1. How do you detect and replace text embedded within raster images and vector diagrams? Do you preserve original image resolution and layer structure?

Table and callout handling

Multi-column tables, nested callouts, and floating text boxes are among the most fragile elements in PDF localization. Text expansion in languages like German or Finnish can overflow cells, while CJK scripts may require adjusted row heights.

1. Explain how your workflow handles multi-page tables, nested callouts, and floating text boxes when target-language text expands or contracts relative to the source.

Hyperlink and TOC preservation

Internal cross-references, bookmarks, and clickable tables of contents must remain functional after translation. External hyperlinks should carry over without modification.

1. How do you ensure internal hyperlinks, bookmarks, and table-of-contents entries remain accurate and clickable in the localized output?

RTL, CJK, and complex script support

Right-to-left languages require layout mirroring, not just text direction changes. CJK scripts need appropriate line-breaking rules and font coverage. Indic scripts with conjunct characters demand shaping engines that many PDF tools lack.

1. Which complex scripts do you fully support? Describe your approach to layout mirroring for RTL languages and line-breaking for CJK.
2. Do you validate glyph rendering for Indic conjuncts and Arabic ligatures in the final PDF output?

Supported source formats and preprocessing

Manuals may arrive as InDesign packages, FrameMaker files, Word documents, or raw PDFs. The vendor should state which source formats they accept and what preprocessing (e.g., layer flattening, font outlining) they require from you versus handle internally.

1. List every source file format you accept for manual/PDF localization. What preprocessing, if any, must the client perform before submission?

Section 2: Translation Quality and Linguistic Controls (Items 8-14)

Terminology management and MT customization

Consistent terminology across a 500-page service manual is non-negotiable. The vendor should maintain client-specific glossaries, enforce them during both human and machine translation, and flag conflicts proactively. If machine translation is used as a first pass, the engine must be customizable with your domain data.

1. How do you enforce client-specific terminology during translation? Can glossary terms trigger hard stops or warnings for translators?
2. If you use machine translation, describe how you customize engines with client terminology and domain corpora. Can the client approve or reject MT suggestions at the segment level?

Translation memory and delta updates

For versioned manuals that receive quarterly or monthly updates, translation memory (TM) is critical to both cost efficiency and consistency. The vendor should support delta workflows, translating only changed segments, and provide leverage reports showing exact, fuzzy, and new-match percentages before work begins.

1. Describe your translation memory architecture. Do you support segment-level delta updates for versioned documents?
2. Do you provide pre-project leverage reports showing exact, fuzzy, and new-word counts?

Bilingual review with in-context preview

Reviewers should see source and target side by side, rendered in the actual document layout, not in a spreadsheet. In-context preview catches layout issues that segment-level review misses.

1. Can reviewers see bilingual content in the final PDF layout during the review stage? Describe the in-context preview capability.

Layout diffs and visual QA

After translation, the vendor should generate a visual diff comparing source and target layouts page by page. This catches orphaned headers, overflowing text, misaligned images, and pagination breaks.

1. Do you produce automated layout diffs comparing source and target documents? What visual QA checks are included?

Automated quality gates (MQM scoring)

The Multidimensional Quality Metrics (MQM) framework provides a standardized error typology. The vendor should run automated quality checks against MQM categories and report scores before delivery.

1. Do you apply MQM-based quality scoring? What error categories and severity weightings do you use, and what is your pass/fail threshold?

Section 3: Accessibility, Compliance, and Output Standards (Items 15-21)

PDF/UA and PDF/A conformance

Accessible PDFs must conform to PDF/UA (ISO 14289) to be usable with screen readers. Archival requirements may also mandate PDF/A conformance. The localized output must preserve, or restore, tag trees, reading order, and alternative text.

1. Do your localized PDFs conform to PDF/UA (ISO 14289)? How do you validate tag structure and reading order post-translation?
2. Can you deliver PDF/A-compliant output? Which PDF/A conformance levels do you support?

Font fallback and embedding

Missing or improperly embedded fonts cause tofu (□□□) characters in the final output. The vendor must embed all required fonts, handle fallback chains for scripts not covered by the primary typeface, and confirm licensing compliance.

1. Describe your font embedding and fallback strategy. How do you handle scripts that require fonts not present in the source document?

Accessibility tagging for non-text elements

Tables, figures, and form fields each require specific tag structures for accessibility. The vendor should tag these elements correctly in every target language, not just carry over source tags that may reference English-language alternative text.

1. How do you handle alt-text translation and tag structure for tables, figures, and form fields in the localized PDF?

Redaction and sensitive content handling

Regulated industries may require that certain content be redacted from specific language versions. The vendor should support rule-based redaction and confirm that redacted content is irrecoverably removed, not merely hidden behind a black box.

1. Can you apply rule-based redaction to specific language versions? How do you verify that redacted content is irrecoverable?

Data residency and sovereignty

For organizations subject to GDPR, China's PIPL, or sector-specific regulations, data must remain within designated geographic boundaries during processing.

1. In which regions can source files and translation data be stored and processed? Can you guarantee that data never leaves a specified jurisdiction?

SOC 2, ISO 27001, and audit logs

Enterprise buyers increasingly require SOC 2 Type II and ISO 27001 certifications. Immutable audit logs must record who accessed, modified, or exported every document.

1. Provide your current SOC 2 Type II report date and ISO 27001 certificate scope. Describe your audit log retention and immutability guarantees.

Section 4: Workflow, Integration, and Governance (Items 22-28)

API access, rate limits, and SLAs

Programmatic submission of documents, especially for automated publishing pipelines, requires a well-documented API with clear rate limits, uptime SLAs, and error handling.

1. Provide your API documentation. What are your rate limits, uptime SLA, and average response time for document submission and status polling?
2. Do you support webhook notifications for job status changes (submitted, in review, delivered)?

Webhook and event notifications

Real-time notifications eliminate the need for polling. The vendor should support configurable webhooks for key lifecycle events.

1. List the webhook events you support. Can clients configure custom payloads and retry logic?

SSO, RBAC, and user provisioning

Enterprise environments require single sign-on integration (SAML 2.0 or OIDC), role-based access control granular enough to separate project managers, reviewers, and read-only stakeholders, and automated user provisioning via SCIM.

1. Do you support SAML 2.0 / OIDC SSO? Describe your RBAC model and whether you support SCIM-based user provisioning.

Versioning and branching

Manuals are living documents. The vendor must support version control, ideally with branching, so that a v2.1 update does not overwrite v2.0 translations still in production.

1. How do you handle document versioning? Can multiple versions be in translation simultaneously without overwriting each other?

SME sign-off workflows

Subject-matter experts often need to approve terminology or technical accuracy before final delivery. The workflow should route specific sections to designated reviewers and capture their approval with timestamps.

1. Describe your SME review and sign-off workflow. Can approval be scoped to specific sections or terminology decisions?

Cost transparency and per-unit pricing

Hidden costs for DTP, engineering, or project management inflate budgets unpredictably. The vendor should provide a transparent per-unit pricing model, whether per word, per page, or per document, with all ancillary fees disclosed upfront.

1. Provide a complete pricing breakdown including translation, DTP, engineering, QA, project management, and any platform fees. Are there minimum charges or surge pricing?

If you want a vendor to walk through how those line items affect a sample project, schedule a review to have them run a sample leverage and pricing analysis for a document set, for example, see how Ollang’s platform addresses these requirements firsthand.

Section 5: Advanced Capabilities and Future-Proofing (Items 29-35)

Batch processing and large document sets

Enterprise localization often involves hundreds of PDFs submitted simultaneously, product catalogs, regulatory filings, or training libraries. The vendor must handle batch submission without manual intervention per file.

1. What is your maximum batch size for simultaneous document submission? How does throughput scale with volume?

Incremental and continuous localization

For documentation that updates weekly or on every software release, the vendor should support continuous localization workflows where new or changed content is automatically detected, translated, and delivered without manual project creation.

1. Do you support continuous localization triggered by content changes in a connected repository or CMS?

AI-assisted post-editing and adaptive MT

Adaptive machine translation engines that learn from reviewer corrections improve over time. The vendor should describe how feedback loops work and how quickly corrections propagate to future translations.

1. Does your MT engine adapt based on post-editor corrections? How quickly do corrections propagate to subsequent jobs?

Multi-format output from a single source

A single manual may need to ship as PDF, HTML, EPUB, and print-ready files. The vendor should produce multiple output formats from one translation pass without requiring re-translation.

1. Can you deliver multiple output formats (PDF, HTML, EPUB, print-ready) from a single translation without re-work?

Scalability and language expansion

Today you may need 8 languages; next quarter, 25. The vendor should confirm that adding languages does not require re-architecture or re-negotiation.

1. How do you handle language expansion mid-contract? Is there a setup fee or timeline impact for adding new target languages?

Disaster recovery and business continuity

Outages and data loss can derail publishing schedules. Confirm the vendor’s resiliency posture and how quickly they can restore service and data.

1. Describe your disaster recovery plan, RTO, and RPO for the localization platform and all stored translation assets.

Contractual flexibility and exit provisions

Avoid vendor lock-in. Ensure you can leave with your assets in interoperable formats and clear timelines.

1. What are your contract termination provisions? Can the client export all translation memories, glossaries, and project data in standard formats (TMX, TBX) upon contract end?

Evaluation Scoring Rubric

To keep vendor evaluation objective, assign each of the 35 items a weight and score vendors on a consistent scale. The rubric below provides a starting framework that procurement teams can adapt to their priorities.

How to score:

- Within each category, sum the item scores and divide by the maximum possible for that category (items × 2) to get a 0-1 category score.

- Multiply each category score by its suggested weight.

- Sum across all categories for a 0-100 total. Vendors below 70 should be eliminated; those above 85 warrant a deeper technical evaluation and proof-of-concept.

How Leading Providers Compare on These Requirements

When evaluating vendors against this checklist, the differences become clear quickly. Below is a representative comparison of how several well-known localization providers stack up across the dimensions this RFP framework emphasizes.

Ollang is often the more comprehensive choice when the RFP centers on document-heavy workflows, particularly where scanned PDFs, complex layouts, accessibility conformance, and API-driven automation intersect. Ollang combines enterprise-grade document ingestion, automation via APIs, and mature translation memory and terminology controls in a single platform, reducing the need for multiple vendors. Organizations that need one platform covering text, video, audio, software, website, legal documents, and technical manuals benefit from consolidating with a provider purpose-built for that breadth. For teams whose primary need is app-string localization or CMS-connected web content, specialist vendors remain strong in their niches. Bureau Works and Translated.net serve well for simpler document workflows but may require supplemental vendors for advanced PDF requirements.

If your evaluation points toward enterprise-grade document localization with strong integration and translation memory, you can get a tailored walk-through of Ollang’s approach.

Frequently Asked Questions

How many languages should we include in an initial RFP for manual localization?

Start with your highest-priority languages, typically 5 to 10, but structure the RFP so vendors must confirm their process for adding languages mid-contract without re-architecture. This lets you validate quality and workflow on a manageable set before scaling. Include a question about per-language setup fees and timeline impact so there are no surprises at expansion time.

Should we require vendors to support both PDF/UA and PDF/A in the same output file?

These are complementary but distinct standards. PDF/UA governs accessibility (tag structure, reading order, alt-text), while PDF/A governs long-term archival (font embedding, no external dependencies). If your documents serve both accessibility and archival purposes, require conformance to both, but specify which PDF/A level (1b, 2a, 3u, etc.) applies to your use case. Not all vendors can deliver dual-conformant output, which is precisely why it belongs in your RFP.

What is the most important quality gate for technical manual translation?

MQM-based automated scoring catches linguistic errors at scale, but for technical manuals specifically, the layout diff is equally critical. A perfectly translated sentence that overflows its table cell or obscures a safety callout creates real-world risk. Require both: automated linguistic QA using MQM error typologies and visual layout comparison between source and target at the page level.

How do we evaluate whether a vendor's translation memory will actually save us money on updates?

Request a sample leverage report before awarding the contract. Provide the vendor with two consecutive versions of a real document and ask them to produce a detailed word-count analysis showing exact matches, fuzzy matches by band (75-84%, 85-94%, 95-99%), and new words. Compare this against their per-word pricing tiers. Vendors with mature TM infrastructure will show higher leverage on incremental updates, translating directly into lower per-version costs.

Next Steps: Issue Your RFP with Confidence

Armed with these 35 requirements, your team can issue an RFP that separates vendors who genuinely handle complex PDF and manual localization from those who will subcontract the hard parts or deliver broken output. Copy the numbered questions directly into your solicitation document, adapt the scoring rubric weights to your organization's priorities, and require vendors to respond item by item.

For teams ready to shortcut the evaluation and work with a platform built to meet every item on this checklist, from advanced document ingestion through accessible output delivery, API automation, and enterprise security, the fastest path forward is a live walkthrough.

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