Dead Link Finder
Scan any page, list, or sitemap for broken links. Get detailed status codes, redirect chains, and instant CSV/JSON exports. Respects robots.txt and handles HSTS.
Robots-awareRedirect chainsHSTS guardWayback links
Professional-Grade Web Tools
Advanced features for professionals and for passersby.
SEO & Site Management
Find broken links, compare sitemaps, and map URLs to archive snapshots.
Sitemap Generator BETA
Generate XML sitemaps from URL lists. Configure changefreq, priority, and lastmod for search engines.
XML outputCopy/downloadSEO ready
Keyword Density BETA
Analyze keyword frequency in your content. Get density percentages and CSV exports for SEO optimization.
SEO analysisCSV exportStop words
Meta Preview BETA
Preview how your page title and description will appear when shared or listed in search results.
Meta tagsTitle & description
Document Tools
Convert between 100+ formats with our Pandoc-powered engine.
Document Converter PRO
Convert between 100+ document formats powered by Pandoc. Supports Markdown, PDF, DOCX, HTML, RTF, ODT, LaTeX, and more. Track changes, extract media.
100+ formatsTrack changesMedia extractBatch convert
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Need details on inputs and outputs? View supported formats →
Formats
View all supported document formats for our converter. See what files you can upload and download.
100+ formatsInput/outputReference
Encoding Doctor BETA
Fix mojibake and encoding errors like "François d’Arcy" → "François d'Arcy". Repair broken accents, smart quotes, and Unicode normalization issues.
UTF-8 repairSmart quotesMojibake fix
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Image & Media
Process images locally - nothing leaves your device.
Image Compressor & Converter
Compress and convert images in your browser - PNG, JPG, WebP, and HEIC. Batch process and download as a ZIP. Files never leave your device.
HEIC supportBatch ZIPQuality sliderResize
Migration & Archives
Compare sitemaps and recover broken URLs.
Sitemap Delta + Redirect Mapper
Compare two sitemaps to identify added, removed, and changed URLs. Export nginx/Apache rewrite rules and 410 Gone lists for migrations.
Smart mappingConfidence scoresRewrite exports410 CSV
Wayback Fixer
Bulk-map broken URLs to Internet Archive snapshots. Configurable time windows, optional HEAD verification, and Save Page Now integration.
Bulk mappingTime windowsHEAD verifySPN queue
Data & Files
Transform, join, and extract data from various formats.
Bulk Find & Replace
Upload a ZIP and find/replace text across 500 files at once. Visual diff preview, regex support, CSV export. No command line required.
500 filesVisual diffsRegex patternsCSV export
Big CSV Joiner
Merge two CSV/TSV files on a shared column (like Email or ID). Supports inner and left joins with automatic delimiter and header detection.
Auto delimiterInner/Left joinsLarge files
Smart JSON ↔ CSV Converter
Flatten nested JSON and JSONL logs into spreadsheet-ready CSV, or convert CSV back into JSON arrays without writing code.
JSONL supportNested flatteningUp to 50MB
Bulk PDF Text Extractor
Upload a ZIP of PDFs and get back a ZIP of .txt files. Ideal for research corpora, contracts, and AI pre-processing.
Batch PDFsPlain text outputError report