Open source

Packages and licences

Zaher Community Tools stand on open-source packages. Each is listed here with the version we use, its licence and the tools that load it.

How we check

A package is added only if its licence is one of the following, read from the package's own package.json and LICENSE file, and the same for its dependencies:

MIT, ISC, BSD-2-Clause, BSD-3-Clause, Apache-2.0, 0BSD

Checked on 2026-10-29. Every package loads only on the page of the tool that needs it, so the hub stays light.

Package	Version	Licence	Used for	Tools
@0x0645/tafqit	1.0.0	MIT	Arabic numbers to words (tafqit) with grammar and currencies One release (Mar 2026) from a small maintainer: output is spot-checked in tests; review before relying on it for legal amounts.	Arabic Number to Words (Tafqit)
@jsquash/avif	2.1.1	Apache-2.0	AVIF encoding in the browser (WebAssembly) Wasm codec chunk is large; loads only inside the image tool.	Image to WebP and AVIF Converter
@jsquash/webp	1.5.0	Apache-2.0	WebP encoding in the browser (WebAssembly) Loads only inside the image tool.	Image to WebP and AVIF Converter
arabizikit	1.0.0	MIT	Arabizi to Arabic script suggestions One release (Aug 2026), no LICENSE file in the tarball (MIT declared in package.json and README). Output is ranked suggestions, not ground truth.	Arabizi to Arabic Converter
bcp-47	2.1.2	MIT	Parse and validate language tags (hreflang)	Loaded by a tool still being written
bidi-js	1.1.0	MIT	Unicode bidirectional algorithm (UAX #9) levels	Mixed Direction Text Fixer Character and Encoding Inspector
bowser	2.15.0	MIT	User-agent string parsing Chosen over ua-parser-js: v2 is AGPL-3.0-or-later, so it is not allowed.	User-Agent Parser
browser-image-compression	2.0.2	MIT	Image compression in the browser No release since Mar 2023; small and stable.	Image Compressor
change-case	5.4.4	MIT	Case conversion (camel, snake, kebab, title and more)	Case Converter
cronstrue	3.38.0	MIT	Explain cron expressions in plain language	Cron Expression Explainer
culori	4.0.2	MIT	Colour parsing and conversion (HEX, RGB, HSL, OKLCH) and WCAG contrast	WCAG Contrast Checker Color Converter: HEX, RGB, HSL and OKLCH
diff	9.0.0	BSD-3-Clause	Text diff (jsdiff)	Text Diff Checker
dompurify	3.4.17	(MPL-2.0 OR Apache-2.0)	Sanitise HTML produced from Markdown Dual-licensed MPL-2.0 OR Apache-2.0; used under Apache-2.0.	Markdown to HTML Converter
entities	8.1.0	BSD-2-Clause	HTML entity encoding and decoding	HTML Entity Encoder and Decoder
fast-xml-parser	5.11.2	MIT	Parse and validate XML (sitemaps)	Sitemap Validator hreflang Validator
fastest-levenshtein	1.0.16	MIT	Edit distance for fuzzy matching No release since 2022; tiny and stable.	NAP and Entity Consistency Checker
fflate	0.8.3	MIT	ZIP and compression in the browser	Favicon and Web App Manifest Generator Image to WebP and AVIF Converter Image Compressor
flesch	2.0.1	MIT	Flesch reading ease formula No release since 2022; the formula does not change.	Flesch Reading Ease Calculator
i18n-iso-countries	7.14.0	MIT	ISO 3166-1 country codes and names (hreflang regions)	hreflang Tag Generator hreflang Validator
iso-639-1	3.1.6	MIT	ISO 639-1 language codes (hreflang languages)	hreflang Tag Generator hreflang Validator
jsbarcode	3.12.3	MIT	Barcode rendering (EAN, UPC, Code 128 and more)	Barcode Generator
jsonc-parser	3.3.1	MIT	JSON parsing with error positions	FAQPage Schema Generator JSON-LD Syntax and Required-Property Checker Microdata, RDFa and JSON-LD Detector JSON-LD Minifier and Prettifier WebSite Schema Generator HowTo Schema Generator Service Schema Generator JSON Formatter and Validator
libphonenumber-js	1.13.15	MIT	Phone number parsing and normalisation Bundles Google's libphonenumber metadata (Apache-2.0) next to its MIT code.	NAP and Entity Consistency Checker
marked	18.1.2	MIT	Markdown to HTML	Markdown to HTML Converter
node-html-parser	9.0.5	MIT	Parse pasted HTML (headings, links, meta tags, images)	Microdata, RDFa and JSON-LD Detector Heading Outline Analyzer Meta Tag Extractor Image Alt Text Checker HTML Link Extractor HTML Table to CSV Converter
papaparse	5.7.0	MIT	CSV parsing and writing	CSV to JSON Converter JSON to CSV Converter Merchant Center Product Feed Checker
qrcode	1.5.4	MIT	QR code generation	QR Code Generator with UTM Tracking
robots-parser	3.0.1	MIT	Test URLs against robots.txt rules (RFC 9309) No release since Feb 2023; small, stable and widely used.	robots.txt URL Tester
simple-statistics	8.0.0	ISC	Normal distribution functions for significance tests and sample sizes	Loaded by a tool still being written
stopword	3.1.5	MIT	Stop-word lists, including Arabic	Keyword Density Checker Arabic Stop Words Filter
syllable	5.0.1	MIT	Syllable counting for the Flesch formula No release since 2022. English only.	Flesch Reading Ease Calculator
tldts	7.4.19	MIT	Registrable domain extraction from URLs	HTML Link Extractor AI Answer Citation Extractor Citation Source-Type Classifier Brand Mention Counter for AI Answers AI Answer Variability Across Runs (Jaccard)
turndown	7.2.4	MIT	HTML to Markdown	HTML to Markdown Converter
yaml	2.9.1	ISC	YAML parsing and writing Chosen over js-yaml, whose v5 pulls in argparse under PSF-2.0, which is not on the allowed list.	YAML to JSON Converter JSON to YAML Converter

Evaluated and not used

Candidates we tested and left out, and why.

ua-parser-js (2.x): Version 2 changed its licence to AGPL-3.0-or-later. Not allowed. Bowser (MIT) is used instead.
js-yaml (5.x): Pulls in argparse 3 under PSF-2.0, which is not on the allowed list. The yaml package (ISC) is used instead.
arabic-transliterate: ISC, but on unvocalised Arabic (the text people actually paste) it gave wrong output on 29 Oct 2026, for example the sun-letter article. The transliteration tool uses the Library of Congress ALA-LC table written out in src/lib/tools/arabic/.
arabic-reshaper: GPL-3.0. Not allowed.

Schema.org vocabulary (release 30.1, 16 Sep 2026) (CC BY-SA 3.0): Type and property names used by the structured data generators and checker.

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