ChangeThisFile

ChangeThisFile is a free online file conversion service offering over 500 conversion routes for images, video, audio, documents, data, ebooks, fonts, and archives. It operates with a privacy‑first architecture: most conversions run client‑side in the browser, while server‑side processing is used only when necessary and files are deleted immediately after conversion. Built and operated by Sovereign Firm, the platform provides a public API for developers to integrate conversion capabilities into their applications.

ChangeThisFile publishes 4 API contracts indexed on the APIs.io network, including Account API, Billing API, Conversions API, and 1 more. Tagged areas include File Conversion, Free, Privacy, and Software-as-a-Service.

The ChangeThisFile catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

ChangeThisFile’s developer surface includes changelog, authentication, sandbox, engineering blog, getting-started guide, documentation, API reference, and 29 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

51.2/100 developing Agent 45/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract 2 Agent Skills

File Conversion Free Privacy Software-as-a-Service

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 51.2/100 · developing

Contract Quality 15.4 / 21

Developer Ergonomics 6.0 / 17

Access Clarity 10.1 / 17

Operational Transparency 3.2 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 4.3 / 15

Agent readiness — 45/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's

2 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 35.1 — up to +13.0 composite points
Contract Governance scores 22.0 — up to +9.4 composite points
Operational Transparency scores 28.9 — up to +9.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/changethisfile-com/apis.yml: open an issue on github.com/api-evangelist/changethisfile-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

ChangeThisFile Account API

API keys and usage reporting.

ChangeThisFile Billing API

Stripe Checkout and customer portal.

ChangeThisFile Conversions API

Synchronous and asynchronous file conversions.

ChangeThisFile Jobs API

Async-only conversion jobs. Use these for long-running operations or when you want to poll instead of holding the request open.

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

changethisfile-com-billing-checkout

AGENT SKILL

changethisfile-com-create-and-poll-job

AGENT SKILL

ChangeThisFile API pricing

Prices published by ChangeThisFile, read 2026-11-03 from changethisfile.com/pricing.

Plan	Price
Free	$0/month
Hobby	$29/month
Startup	$99/month
Scale	$499/month
Growth	$1,999/month
Enterprise	Talk to us

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Changethisfile Com Plans Pricing

6 plans

PLANS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Changethisfile Com Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Changethisfile Com Context

8 classes · 28 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

ChangeThisFile API Rules

71 rules · 67 errors 1 warnings 3 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

ConversionRequest

4 properties

JSON SCHEMA

ConversionResponse

5 properties

JSON SCHEMA

Job

3 properties

JSON SCHEMA

JobStatus

6 properties

JSON SCHEMA

Plan

8 properties

JSON SCHEMA

Usage

6 properties

JSON SCHEMA

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Changethisfile Com Authentication

1 scheme

SECURITY

Changethisfile Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Changethisfile Com Vulnerability Disclosure

no policy recorded

SECURITY

Changethisfile Com Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Changethisfile Com Agentic Access

9 operations · 6 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Sandbox

Sandbox

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPISpec

OpenAPISpec

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 9

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 9

Access & Security 6

Authentication, authorization, and security posture

Compliance

Authentication

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

ChangeLog

StatusPage

ChangeLog

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: changethisfile-com
name: ChangeThisFile
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://changethisfile.com/images/og-default.png
description: 'ChangeThisFile is a free online file conversion service offering over 500 conversion routes for images, video,
  audio, documents, data, ebooks, fonts, and archives. It operates with a privacy‑first architecture: most conversions run
  client‑side in the browser, while server‑side processing is used only when necessary and files are deleted immediately after
  conversion. Built and operated by Sovereign Firm, the platform provides a public API for developers to integrate conversion
  capabilities into their applications.'
url: https://artifacts.apis.io/changethisfile-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- File Conversion
- Free
- Privacy
- Software-as-a-Service
tags_raw:
- File Conversion
- API
- Free
- Privacy
- SaaS
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/changethisfile-com-agentic-access.yml
- type: Plans
  url: plans/changethisfile-com-plans-pricing.yml
- type: Spectral
  url: rules/changethisfile-com-rules.yml
- type: JSONLD
  url: json-ld/changethisfile-com-context.jsonld
- type: Vocabulary
  url: vocabulary/changethisfile-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Webhooks
  url: asyncapi/changethisfile-com-webhooks.yml
- type: DataModel
  url: data-model/changethisfile-com-data-model.yml
- type: ChangeLog
  url: changelog/changethisfile-com-changelog.yml
- type: Idempotency
  url: conventions/changethisfile-com-conventions.yml
- type: Conventions
  url: conventions/changethisfile-com-conventions.yml
- type: Compliance
  url: https://changethisfile.com/security
- type: Authentication
  url: authentication/changethisfile-com-authentication.yml
- type: ErrorCatalog
  url: errors/changethisfile-com-problem-types.yml
- type: Conformance
  url: conformance/changethisfile-com-conformance.yml
- type: LLMsTxt
  url: llms/changethisfile-com-llms.txt
- type: WellKnown
  url: well-known/changethisfile-com-well-known.yml
- type: Hosts
  url: hosts/changethisfile-com-hosts.yml
- type: Vendors
  url: vendors/changethisfile-com-vendors.yml
- type: StatusPage
  url: https://changethisfile.com/status
- type: Security
  url: https://changethisfile.com/security
- type: Sandbox
  url: https://changethisfile.com/api/playground
- type: ChangeLog
  url: https://changethisfile.com/docs/changelog
- type: Blog
  url: https://changethisfile.com/blog
- type: GettingStarted
  url: https://changethisfile.com/docs/quickstart
- type: TrustCenter
  url: security/changethisfile-com-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/changethisfile-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/changethisfile-com-domain-security.yml
- type: Website
  url: https://changethisfile.com/
- type: Documentation
  url: https://changethisfile.com/docs/
- type: APIReference
  url: https://changethisfile.com/docs/api-reference
- type: OpenAPISpec
  url: https://changethisfile.com/docs/openapi.yaml
- type: Pricing
  url: https://changethisfile.com/pricing
- type: TermsOfService
  url: https://changethisfile.com/terms
- type: PrivacyPolicy
  url: https://changethisfile.com/privacy
- type: Support
  url: https://changethisfile.com/contact
apis:
- aid: changethisfile-com:changethisfile-com-account-api
  name: ChangeThisFile Account API
  description: API keys and usage reporting.
  humanURL: https://changethisfile.com/docs/api-reference
  baseURL: https://changethisfile.com
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/changethisfile-com-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/changethisfile-com-plan-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-status-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-request-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-usage-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-response-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-schema.json
- aid: changethisfile-com:changethisfile-com-billing-api
  name: ChangeThisFile Billing API
  description: Stripe Checkout and customer portal.
  humanURL: https://changethisfile.com/docs/api-reference
  baseURL: https://changethisfile.com
  tags:
  - Billing
  properties:
  - type: OpenAPI
    url: openapi/changethisfile-com-billing-api-openapi.yml
  - type: JSONSchema
    url: json-schema/changethisfile-com-plan-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-status-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-request-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-usage-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-response-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-schema.json
- aid: changethisfile-com:changethisfile-com-conversions-api
  name: ChangeThisFile Conversions API
  description: Synchronous and asynchronous file conversions.
  humanURL: https://changethisfile.com/docs/api-reference
  baseURL: https://changethisfile.com
  tags:
  - Conversion
  tags_raw:
  - Conversions
  properties:
  - type: OpenAPI
    url: openapi/changethisfile-com-conversions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/changethisfile-com-plan-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-status-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-request-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-usage-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-response-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-schema.json
- aid: changethisfile-com:changethisfile-com-jobs-api
  name: ChangeThisFile Jobs API
  description: Async-only conversion jobs. Use these for long-running operations or when you want to poll instead of holding
    the request open.
  humanURL: https://changethisfile.com/docs/api-reference
  baseURL: https://changethisfile.com
  tags:
  - Job
  tags_raw:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/changethisfile-com-jobs-api-openapi.yml
  - type: JSONSchema
    url: json-schema/changethisfile-com-plan-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-status-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-request-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-usage-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-conversion-response-schema.json
  - type: JSONSchema
    url: json-schema/changethisfile-com-job-schema.json
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 34
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

ChangeThisFile API — frequently asked questions

Does ChangeThisFile have an API?

Yes. APIs.io lists 4 APIs from ChangeThisFile, including ChangeThisFile Account API, ChangeThisFile Billing API and ChangeThisFile Conversions API, and 1 more.

Is there an OpenAPI specification for the ChangeThisFile API?

Yes. APIs.io indexes 4 OpenAPI specifications for ChangeThisFile, each linked for download from this page.

How do I authenticate with the ChangeThisFile API?

ChangeThisFile uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Changethisfile Com Authentication.

How much does the ChangeThisFile API cost?

ChangeThisFile publishes its prices; its Free plan is $0/month as of 2026-11-03. APIs.io lists 6 pricing plans for ChangeThisFile, with each plan's price, limits and inclusions under Pricing on this page.

Is the ChangeThisFile API ready for AI agents?

ChangeThisFile has a Kin Score of 51.2 out of 100 (developing) and an Agent Readiness score of 44.9 (agent-ready), scored by API Evangelist on 2026-11-06.

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