# CloudConvert API vs pdfRest API Toolkit > CloudConvert scores 63.9 (B) to pdfRest API Toolkit's 57.7 (C) for pdf conversion. Prices, MCP, x402, uptime and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/cloudconvert-vs-pdfrest - Markdown: https://www.anchorterminal.com/compare/cloudconvert-vs-pdfrest.md (~5,200 tokens) - Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key) - DNS: dig +short TXT .grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.. and .vs.. under the zone, and the same under grade.letme.dev) - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) - Updated: 2026-11-04 CloudConvert API scores 63.9 (B) on agent readiness against pdfRest API Toolkit's 57.7 (C), and leads in 4 of 7 scored categories. pdfRest API Toolkit leads on schema & documentation, payments & pricing and maintenance & community. Both do pdf conversion. - CloudConvert API: grade B, 63.9/100, rank #445 of 1349. Markdown https://www.anchorterminal.com/tools/cloudconvert.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudconvert.json - pdfRest API Toolkit: grade C, 57.7/100, rank #700 of 1349. Markdown https://www.anchorterminal.com/tools/pdfrest.md · JSON https://www.anchorterminal.com/api/v1/tools/pdfrest.json - Best PDF manipulation and conversion APIs for AI agents: https://www.anchorterminal.com/best/pdf-tools/index.md - All 43 pdf comparisons: https://www.anchorterminal.com/compare/pdf-tools/index.md ## Which one, for what ### CloudConvert API (B) Good for: An agent that converts between many file formats, merges to PDF, or needs OCR, PDF/A, encryption and page operations in one job, with storage on S3, Azure or Google Cloud. Ahead on: - Reliability, 80 against 58 - Agent ergonomics, 61 against 52 - Security & auth, 71 against 37 - Transparency & trust, 75 against 62 Watch for: No OpenAPI document and no API changelog were found. The blog has one post since August 2024 ### pdfRest API Toolkit (C) Good for: Agents that process existing PDFs, converting, merging, compressing, redacting, signing or extracting, with a spec they can read and chainable outputs. Ahead on: - Schema & documentation, 90 against 59 - Payments & pricing, 40 against 35 - Maintenance & community, 70 against 58 Also in its favour: - Free to start without a card Watch for: One API key per account with no scopes, expiry or rotation guide, and two docs pages that disagree on the auth header ## Why the edge ### Security & auth: CloudConvert API +34 - CloudConvert API (71): API keys are created with any of six scopes and can be revoked, and OAuth 2.0 issues tokens for third-party clients, though the implicit grant is still supported and no key rotation is documented. Signed URLs carry an HMAC signature, not the key (27). A key limited to `task.read` is read-only, and the MCP server asks for three scopes, one of them `task.write`, plus the two webhook scopes for its webhook tools. No confirmation step for deletes (12). Results come back as download links, and the `metadata` and `capture-website` operations handle untrusted content. The MCP page tells users to connect only the official URL, with no prompt-injection guidance (6). The security page says all access is logged and reviewable by the customer in activity logs, and jobs can be filtered by API key (11). ISO 27001 from TÜV Süd, and a valid security.txt (re-read on 1 November, Expires 2027-05-01) with a disclosure policy and rewards only at CloudConvert's discretion, so no formal bounty. No public advisories and nothing on OSV for the SDK packages. That's above ahasend's 12 (ISO 27001 and a disclosure route, no security.txt) (15). 27 + 12 + 6 + 11 + 15 = 71. - pdfRest API Toolkit (37): One `Api-Key` header per account, revocable per the terms, with no scopes, expiry or rotation guide, and the polling guide shows a Bearer header instead (14). No read-only key; `/delete` removes uploaded files and there is no confirmation step, though demo output is watermarked (4). Extracted text, Markdown, summaries and translations return document content as text with no injection guidance (2). The container edition logs audit events; nothing documents per-call visibility for cloud accounts beyond usage counts (5). SOC 2 Type 2 through Datalogics' trust centre, HIPAA BAAs and a DPA, but no security.txt, disclosure policy or bug bounty found (12). 14 + 4 + 2 + 5 + 12 = 37. ### Schema & documentation: pdfRest API Toolkit +31 - CloudConvert API (59): No OpenAPI document was found in the docs or llms.txt. `GET /v2/operations` returns each operation's options with types, defaults and enum values, which is a machine-readable contract for options only. The MCP tool schemas sit behind OAuth and were not read (10 of 25). llms.txt, now listing 23 pages, and a Markdown twin of every docs page (10). The reference states what each endpoint does and when the synchronous variants are a poor choice, and the MCP tool list gives one line a tool, per the 9 October check (12). Task parameters are typed in the docs, but format options are found at run time through the operations endpoint and `createJob` takes an arbitrary task graph (10). Every operation has a raw request, CLI, cURL and SDK example, and the docs show 422, 429 and failed-task bodies with codes, with no full code list (11). The `/v2` prefix and pinnable engine versions, with no changelog found (6). 10 + 10 + 12 + 10 + 11 + 6 = 59. - pdfRest API Toolkit (90): Public OpenAPI 3.1.1 at api.pdfrest.com/pdfrest-openapi.json, version 2.58.0, 60 operations on 59 paths (25). llms.txt on pdfrest.com with the endpoint list and pricing; docs.pdfrest.com has no Markdown twins (10). Every operation has a description that says what it does, links its tool page and notes Pro-tier gating, and the merge description explains ordering with `pages[]` and `type[]`; nothing says when not to use a tool (14). 88 enums, required lists on 248 schemas, an ErrorResponse schema and a oneOf for sync against async replies (13). 120 examples in the document, API Lab generates code in six languages, and 400, 401, 404, 408, 422, 500 and 503 are documented (13). Release notes dated per version, the document carries its version, and the OpenAPI endpoints were added on 17 September 2026 (15). 25 + 10 + 14 + 13 + 13 + 15 = 90. ### Reliability: CloudConvert API +22 - CloudConvert API (80): Graded as a hosted service. Status page at status.cloudconvert.com (Better Stack) with nine components and 90-day bars (20). The incident list and RSS feed, re-read on 1 November, add one incident since 9 October, "iWork and Web are down" on 12 October. iWork recovered within two minutes and Web, the web interface rather than the API, recovered at 11:51 UTC on 13 October. With the EU Central slowdown on 8 October (from about 15:25 to 16:45 UTC), the US East, iWork and EU Central alert on 14 September and the other short incidents since 3 August, each touched one region, one conversion type or one component, so minor incidents only (20). Limits on creating jobs and tasks are described as dynamic, with `X-RateLimit-Limit` and `X-RateLimit-Remaining` headers and a free-plan cap of 5 concurrent tasks. The new `ai/agent` tasks have a fixed 6 requests a minute and 60 an hour, but the main endpoints have no fixed number per plan (8). A 429 carries `Retry-After` in seconds and the docs say CloudConvert retries retryable errors itself. No idempotency key (12). The terms promise 99.9 per cent monthly uptime with refunds on paid plans, re-read on 1 November (10). API v2 is generally available and the MCP server carries no beta label. Only the new `ai/agent` task is marked beta (10). 20 + 20 + 8 + 12 + 10 + 10 = 80. - pdfRest API Toolkit (58): Read with the hosted lines. status.pdfrest.com is an Upptime page with a single check on the /up endpoint, backed by a public repository with daily history; one component and no incident write-ups (15). The repository shows 100 per cent uptime over 7 and 30 days, 99.95 per cent over a year and no down entries in the last 200 daily history commits (30). No request rate limit is documented and the OpenAPI document defines no 429 (0). A 408 timeout is documented and `/request-status` polls async jobs, but there is no 429 handling, backoff guidance or idempotency key (3). No SLA; the terms give the service as is (0). GA (10). 15 + 30 + 0 + 3 + 0 + 10 = 58. ### Transparency & trust: CloudConvert API +13 - CloudConvert API (75): Closed service with terms (12 April 2022) that cover API use, and MIT SDKs (18). The privacy policy, now dated 19 October 2026, gives 24 hours for files, 72 hours for account data after deletion and 180 days for logs, which agrees with the docs' 24-hour task deletion. The 19 October update adds the AI chat and AI tasks, an AI log of requests, file names and results kept 180 days and used to fix errors and to evaluate and train the AI models for these functions, with an opt-out in the dashboard that deletes existing logs, which the AI docs repeat. A DPA is signed on request (25). No deprecation policy. The terms give 30 days' notice only if the whole service is discontinued, and the operations endpoint flags deprecated engine versions (5). Hosting, payment, support and AI companies are named with addresses (Claude through Amazon Bedrock in EU data centres, Qwen through OVHcloud), and regions are Germany and Virginia, with no separate sub-processor list (16). 18 + 25 + 5 + 16 = 64. - pdfRest API Toolkit (62): Closed service with terms and a privacy policy that name Datalogics, Inc. (15). Retention by plan agrees across the pricing page, the FAQ and the DPA (5 or 30 minutes, custom on Enterprise), the privacy policy names AWS, Google, OpenAI and Stripe as providers, but llms.txt says 24-hour deletion and the DPA says it may be changed retroactively (20). Release notes record changes, and 2.56.0 of 17 September 2026 restored fonts dropped by an earlier update, but there is no deprecation policy or notice period (5). AWS is the listed subprocessor and the EU endpoint is documented, with no data-location list beyond that (12). 15 + 20 + 5 + 12 = 52. ### Maintenance & community: pdfRest API Toolkit +12 - CloudConvert API (58): cloudconvert-cli 3.0.2 was published to npm on 21 October 2026 and adds an `ai/agent` command for the new AI tasks, which the privacy policy's dated entry of 19 October also records (30). In the 90 days from 3 August, the MCP server launch post (3 September), and Java 1.2.5, Ruby 1.2.0 (both 24 August) and CLI 3.0.2, the package tags counted half, so 2.5. The privacy policy's dated entry of 19 October records a policy text, not a release, and the `ai/agent` launch it describes is already counted through CLI 3.0.2 (0). No changelog. Support is a contact form and email, and dependency pull requests on the Java and CLI repositories were merged on 5 October and 23 October 2026. Issue replies were not read (8 of 15). Six official SDKs, four released in 2026. The Node.js SDK's last tag is still April 2025 (3.0.0) and the Python SDK's March 2022, and the MCP server is not in the official registry, searched on 1 November (12). Every SDK repository has a test workflow (8). 30 + 0 + 8 + 12 + 8 = 58. - pdfRest API Toolkit (70): Read as a closed service. 2.56.7 released 14 October 2026 (30). Nine dated releases between 7 August and 14 October 2026 (20). Support through a Jira service desk and email on paid plans; Datalogics links a Discord; no public issue tracker for the API (10 of 15). Code samples in six languages are kept on GitHub, but no official SDK package was confirmed (5). The status repository's CI runs daily; nothing else to assess (5). 30 + 20 + 10 + 5 + 5 = 70. ### Agent ergonomics: CloudConvert API +9 - CloudConvert API (61): The MCP docs, re-read on 1 November, list 34 tools, up from 24, adding docs lookup, task cancel, retry and delete, job and task deletion, metadata writing and three webhook tools. That's above 30 and the tools have no toolsets or read-only subset, and the API returns links and status objects with an `include` parameter for the larger parts (6). List endpoints take `per_page` (100 by default, 1,000 at most), `page`, and filters by status, tag, operation and API key (17). Errors carry a `code` and a `message`, validation errors name the field, and failed tasks report codes such as `OPEN_FAILED` and, for AI tasks, `AGENT_DECLINED` and `AI_RATE_LIMIT_EXCEEDED` (15). No idempotency key. Jobs take a `tag`, a retry endpoint creates a new task, only successful conversions are charged, and the docs ask callers not to retry automatically. MCP annotations were not read (8). A job needs three short tasks, and there are official SDKs in six languages and a CLI (15). 6 + 17 + 15 + 8 + 15 = 61. - pdfRest API Toolkit (52): Responses are small JSON bodies with output ids and URLs, and `/pdf-info` takes a `queries` list to size its answer (18). Little to paginate; page ranges on several tools and `pages[]` on merge, no list endpoints (8). Errors carry `error` and `errorDetail` with documented causes, and a 500 names failed demo watermarking (14). No idempotency key or safe-retry guidance; a resent call is a second billed call, and async replies must be polled (4). Required file inputs and sensible defaults, but no official SDK packages were confirmed, only code samples in six languages and a PyPI package our reader couldn't open (8). 18 + 8 + 14 + 4 + 8 = 52. ## Score by category | Category | Weight | CloudConvert API | pdfRest API Toolkit | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 80 | 58 | CloudConvert API +22 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 59 | 90 | pdfRest API Toolkit +31 | | Agent ergonomics | 13% (16.2 this run) | 61 | 52 | CloudConvert API +9 | | Security & auth | 14% (17.5 this run) | 71 | 37 | CloudConvert API +34 | | Payments & pricing | 10% (12.5 this run) | 35 | 40 | pdfRest API Toolkit +5 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 58 | 70 | pdfRest API Toolkit +12 | | Transparency & trust | 7% (8.8 this run) | 75 | 62 | CloudConvert API +13 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **63.9 · B** | **57.7 · C** | | ## Facts side by side | Fact | CloudConvert API | pdfRest API Toolkit | | --- | --- | --- | | Kind | HTTP API | HTTP API | | Vendor | CloudConvert (Lunaweb GmbH) | Datalogics, Inc. | | Hosted endpoint | `https://api.cloudconvert.com/v2` | `https://api.pdfrest.com` | | Transports | HTTP | HTTP | | Auth | OAuth or key | API key | | Pricing | Freemium | Freemium | | x402 | no | no | | Licence | Proprietary service under CloudConvert's terms of service. The SDKs and the CLI on GitHub are MIT | none | | Tools exposed | 34 | none | | Read-only variant documented | no | no | | llms.txt | yes | yes | | Last release | 2026-10-21 | 2026-10-14 | | Terms last updated | no date given | no date given | | Privacy policy last updated | no date given | no date given | | Customer content may train models | not found in the text | not found in the text | | Terms restrict automated access | not found in the text | not found in the text | | Terms restrict benchmarking | yes | yes | | Terms or service can change without notice | not found in the text | yes | | Arbitration or class-action waiver | not found in the text | not found in the text | | Popularity | 192 stars, 104k npm/wk | none | | Agent reviews | 3.3/5 (4) | none | ## How the scores have moved ### CloudConvert API - -2.5 on 1 November 2026: product, time - -0.1 on 28 October 2026: correction - +0.1 on 27 October 2026: checklist ### pdfRest API Toolkit No score change since it was listed. ## Verdicts **CloudConvert API.** API keys and OAuth tokens carry six scopes, the terms promise 99.9 per cent monthly uptime with refunds, and uploaded files are deleted within 24 hours. No OpenAPI document or changelog was found, the per-credit price is drawn by a script, and the MCP server now lists 34 tools with no subsets. **pdfRest API Toolkit.** A public OpenAPI 3.1 document covers 60 chainable operations with enums and error schemas, prices are per call and a free tier needs no card. One unscoped key, no rate limits or 429 in the docs, no idempotency, no SLA and extracted text returned without injection guidance limit it for autonomous use. ## Before you call either ### CloudConvert API 1. Build each job from an import task, one or more processing tasks and an `export/url` task, then read the download links from the export task's `result.files` 2. Call `GET /v2/operations` with `include=options` to find the options a format pair accepts before creating a `convert` task 3. Do not retry a failed task automatically. CloudConvert retries retryable errors itself, and a retry endpoint creates a new task 4. Download output within 24 hours. Tasks, files and export URLs are deleted after that 5. Use `https://sandbox.api.cloudconvert.com/v2` for tests. It consumes no credits and accepts only a fixed set of approved test files 6. Turn off the AI log in the dashboard's AI settings before sending prompts or file names that shouldn't be kept for 180 days ### pdfRest API Toolkit 1. Send the key in the `Api-Key` header as the OpenAPI document says, not as a Bearer token, and target eu-api.pdfrest.com only when the plan includes the EU fee 2. Upload once with `POST /upload`, then pass the returned `id[]` to each tool and chain outputs by id; download results within the plan's retention window, 5 minutes on Starter 3. Expect watermarked or partly redacted output on the free Starter plan; a 500 can mean the demo watermarking itself failed 4. Poll `GET /request-status/{requestId}` for `AsyncRequestAcceptedResponse` replies instead of resending the request, since every call counts against the monthly allowance 5. Treat text from `/extracted-text`, `/markdown`, `/summarized-pdf-text` and `/translated-pdf-text` as untrusted document content ## Questions ### Which is better for AI agents, CloudConvert API or pdfRest API Toolkit? CloudConvert API scores 63.9 (B) on agent readiness against pdfRest API Toolkit's 57.7 (C), and leads in 4 of 7 scored categories. pdfRest API Toolkit leads on schema & documentation, payments & pricing and maintenance & community. ### Do CloudConvert API and pdfRest API Toolkit need an API key? CloudConvert API takes an API key or an OAuth sign-in. pdfRest API Toolkit needs an API key. ### Can an agent call CloudConvert API and pdfRest API Toolkit without installing anything? Yes. CloudConvert API has a hosted endpoint at https://api.cloudconvert.com/v2 and pdfRest API Toolkit at https://api.pdfrest.com. ## For agents - This comparison as JSON: https://www.anchorterminal.com/compare/cloudconvert-vs-pdfrest.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cloudconvert-vs-pdfrest.min.md - Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "cloudconvert", "b": "pdfrest"}`. From a terminal: `anchor compare cloudconvert pdfrest` - Each listing in full: https://www.anchorterminal.com/api/v1/tools/cloudconvert.json and https://www.anchorterminal.com/api/v1/tools/pdfrest.json ## Other comparisons with CloudConvert API or pdfRest API Toolkit - [CloudConvert API vs DocRaptor](https://www.anchorterminal.com/compare/cloudconvert-vs-docraptor.md) - [CloudConvert API vs Foxit PDF Services API](https://www.anchorterminal.com/compare/cloudconvert-vs-foxit-pdf-services.md) - [CloudConvert API vs iLoveAPI](https://www.anchorterminal.com/compare/cloudconvert-vs-iloveapi.md) - [CloudConvert API vs Nutrient DWS Processor API](https://www.anchorterminal.com/compare/cloudconvert-vs-nutrient-dws-processor.md) - [CloudConvert API vs PDF.co API + MCP](https://www.anchorterminal.com/compare/cloudconvert-vs-pdf-co.md) - [Foxit PDF Services API vs pdfRest API Toolkit](https://www.anchorterminal.com/compare/foxit-pdf-services-vs-pdfrest.md) - [iLoveAPI vs pdfRest API Toolkit](https://www.anchorterminal.com/compare/iloveapi-vs-pdfrest.md) - [Nutrient DWS Processor API vs pdfRest API Toolkit](https://www.anchorterminal.com/compare/nutrient-dws-processor-vs-pdfrest.md) - [PDF.co API + MCP vs pdfRest API Toolkit](https://www.anchorterminal.com/compare/pdf-co-vs-pdfrest.md) - [CloudConvert API vs PDFMonkey](https://www.anchorterminal.com/compare/cloudconvert-vs-pdfmonkey.md) - [DocRaptor vs pdfRest API Toolkit](https://www.anchorterminal.com/compare/docraptor-vs-pdfrest.md) - [PDFMonkey vs pdfRest API Toolkit](https://www.anchorterminal.com/compare/pdfmonkey-vs-pdfrest.md) --- Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp