Open multi-megabyte text files that crash editors — chunked rendering keeps scrolling smooth. Read 50 MB logs without freezing — local FileReader streaming, free, no signup.
Format JSON Lines files with per-line pretty-printing and validation. Read streaming logs like structured data — local processing, free, no signup.
Decode CBOR binary (RFC 7049) into readable structures — inspect IoT and WebAuthn payloads. Read COSE keys without a parser library — local decoding, free, no signup.
Generate CSS filter chains — blur, brightness, contrast, grayscale, hue-rotate. Grade images without editors — local generation, free, no signup.
Anonymize a single IP address — mask octets or hash for analytics. Share logs without exposing users — local processing, free, no signup.
Remove duplicate text lines with the deduplicator, preserving first-seen order — clean email lists and logs. Dedupe 10,000 rows without Excel gymnastics — local processing, free, no signup.
Tens of megabytes smoothly via chunked rendering — only visible pages sit in DOM. Editors crash where this streams.
Yes — incremental search scans chunks with match counts. Thousand-hit queries paginate instead of freezing.
Viewing optimized; large edits belong in proper editors or sed. Copy sections out for modification elsewhere.
No — reading streams locally via FileReader. Content never leaves your device.
CSV Format Validator
Validate CSV structure — flag rows with wrong column counts and empty cells before import. Catch bad rows locally — free, no signup.
Column Extractor
Extract CSV columns by name into clean lists. Pull email and name columns from pasted CSV in seconds — local parsing, free, no signup.
Last updated October 2026