Free checkers and calculators for the rules that changed in 2026

Each tool runs in your browser on your own numbers or your own file — free, no account. The full version is a one-time licence.

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By rule and country

Most installed

Oracle JDK License Gate

VS Code extension

Finds the Java lines in your build that Oracle now bills for, and the free line that replaces each one

VS Code Marketplace: 271 installs

Free in the browser · full version $29 once

pyproject.toml Release Gate (PEP 639)

VS Code extension

19 date-aware checks on the [project] metadata that decides whether your next release uploads

VS Code Marketplace: 17 installs

Free in the browser · full version $29 once

Coverage Gate Lint

VS Code extension

Finds the coverage gates in your repo that can never fail a build

VS Code Marketplace: 15 installs

Free in the browser · full version $29 once

Firmware Release Gate for sdkconfig and prj.conf

VS Code extension

Finds the build-config lines that ship an ESP-IDF or Zephyr device with secure boot off, a debug port open, unsigned images or plaintext…

VS Code Marketplace: 14 installs

Free in the browser · full version $29 once

Linker Map Auditor - FLASH & RAM budget for GNU ld map files

VS Code extension

Read the .map your linker already wrote and see, in exact bytes, which object file is spending your FLASH and RAM - and by how much you…

VS Code Marketplace: 12 installs

Free in the browser · full version $29 once

Newest

Admin Dashboard UI Kit — DSAR Privacy Request Console (GDPR · CCPA · LGPD)

Figma kit

8 components, 30 variants for the admin screen where privacy requests get answered on time: GDPR one month, CCPA 45 days, LGPD 15 days from…

Free in the browser · full version $168 once

pubspec Publish Gate - pub.dev pre-publish check

VS Code extension

pubspec publish: 6 findings on the example pubspec.yaml, 10 rules from dart.dev

Free in the browser · full version $29 once

Lambda Package Size Budget - 250 MB check

VS Code extension

Lambda package size: measured MB per requirements.txt and package.json line against the 250 MB limit

Free in the browser · full version $29 once

Testimonial Submission Form with FTC Review Disclosures – 16 CFR Part 465 Staff and Reward Checks for US Businesses

WordPress plugin

The FTC Consumer Reviews and Testimonials Rule (16 CFR Part 465, in force since 21 October 2024) requires reviews by your staff or their…

Free in the browser · full version $60 once

Xcode 26 SDK Gate for GitHub Actions

VS Code extension

Xcode 26 App Store Connect SDK requirement: which Xcode each CI job really builds with, and the fix line

Free in the browser · full version $29 once

helm chart lint Chart.yaml - Helm 4 Release Gate

VS Code extension

Every broken Chart.yaml line with its replacement line, before Helm 3 security fixes end 2026-11-11

Free in the browser · full version $29 once

npm publish package.json gate: engines & SPDX

VS Code extension

Node 20 end of life, SPDX licence and provenance checks for package.json

Free in the browser · full version $29 once

NuGet Pack Gate — csproj licence, icon, TFM

VS Code extension

nuget pack csproj check for .csproj, .fsproj, .vbproj and Directory.Build.props: the sample Acme.Invoicing.csproj returns 6 findings (2…

Free in the browser · full version $29 once

composer.json Validate - PHP EOL Release Gate

VS Code extension

composer.json validate: end-of-life PHP floors and composer validate --strict fields, with the fix line

Free in the browser · full version $29 once

go.mod Release Gate: /vN suffix and go line check

VS Code extension

go.mod check before you tag: /v2 suffix, supported Go line, toolchain, replace, require

Free in the browser · full version $29 once

pypdf Migration Check - PyMuPDF AGPL Licence Gate

VS Code extension

Map every fitz / PyMuPDF line to its pypdf, pdfplumber or pypdfium2 replacement

Free in the browser · full version $29 once

gitlab-runner Compute Minutes Audit for GitLab CI

VS Code extension

Ranks every .gitlab-ci.yml job by GitLab.com cost factor and worst-case compute minutes, with the tags: line that moves it to your own…

Free in the browser · full version $29 once

All tools (373)

Subscriptions and team keys

One team key opens every ReadyStack linter for five seats and CI.
Every linter — annual keyTeam key — $149 onceAll prices

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