All-in-One Tools Collection
A broad collection of online tools for development, AI, design, and productivity tasks.
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NSFW Image Content Detector
AI-powered image content safety detector using NSFWJS to classify potentially inappropriate content with fallback analysis, supporting GIF/Animated WebP/APNG and JPEG/PNG/WEBP.
Markdown to Slack mrkdwn
Convert GitHub-flavored Markdown into Slack-friendly mrkdwn and flag unsupported constructs
BIP39 Mnemonic Phrase Generator
Generate or validate 12 to 24 word BIP39 mnemonic phrases with entropy and PBKDF2-HMAC-SHA512 seed output
PDF/A Convert
Convert PDF documents to a self-declared PDF/A archival profile with zero external dependencies
PDF/A Validate
Pre-validate PDF documents for PDF/A archival compliance
PDF Accessibility Check
Audit PDF documents for accessibility features like tagging, language and PDF/UA metadata
PDF Diff
Compare two PDF documents page by page and highlight text differences
PDF Word Count
Count words, characters, sentences and CJK characters in PDF documents
Resume Job Description Matcher
Compare resume text against a job description, normalize keyword variants, and highlight coverage gaps
Audio Loudness LUFS Normalizer
Measure integrated LUFS, true peak, and LRA, then normalize audio to Spotify, Apple Music, broadcast, or custom targets
ISS & Satellite Pass Tracker
Predict ISS, Hubble, and representative Starlink passes for a chosen observing point and date
PDF Annotation Export
Extract existing annotations (highlights, comments, stamps, links, markup) from a PDF into JSON