URL Link Extractor

About this url link extractor

URL Link Extractor — browser-based utility.

How this tool works

Uses a case-sensitive regular expression for lowercase http and https substrings, removes selected trailing punctuation, and deduplicates exact matches. It does not parse or validate URLs against RFC 3986.

1. Pattern Compilation & Safety Auditing: Compiles pattern regular expressions with safety checks against catastrophic backtracking.
2. Stream Extraction & De-duplication: Iterates through text buffers, collecting matching groups and filtering duplicates via Set lookups.
3. PII Redaction & Tokenization: Replaces sensitive entities (credit cards, SSNs, emails) with masked placeholders (e.g. [REDACTED_EMAIL]).
4. Text Comparison: Applies the selected tool's documented local comparison rule to the two browser text fields.

Worked example

Limits and verification

Regex execution is guarded by timeout thresholds to mitigate ReDoS (Regular Expression Denial of Service). Credit card extraction verifies the Luhn mod-10 checksum to avoid false positives on random 16-digit sequences.

Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.

Browser processing boundary

Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.

Relevant references

These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.

• The Unicode Standard Version 15.1
• Standard Browser Web API / Algorithm Implementation (No single external RFC/ISO standard)

Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology

How to use it

1. Enter, paste, or select your input data into the URL Link Extractor workspace controls.
2. Review available parameter fields, units, formats, or options configured for your task.
3. Click the action button or observe immediate live calculations rendered in your browser runtime.
4. Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.