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Powerful, 100% private utilities, ready when you are.

EPUB Checker thumbnail
Experimental

EPUB Checker

document

100% private, client-side EPUB 3.3 validation. Detects PKG-006, OPF-030, and Amazon KDP upload blockers before submission.

kdpepubepub3
CSV & JSON SQL Query Tool thumbnail
Experimental

CSV & JSON SQL Query Tool

developer

Run standard SQL queries directly on your CSV and JSON files in the browser. 100% private, zero server uploads, powered by DuckDB WebAssembly.

csv sqljson sqlquery csv
Universal Image Cropper thumbnail

Universal Image Cropper

image

Crop, resize, and edit JPG, PNG, WebP, and HEIC images online for free. 100% private browser tool with custom aspect ratios and no server uploads.

image cropperphoto editoraspect ratio tool
PDF Redactor thumbnail

PDF Redactor

document

Permanently redact sensitive text, SSNs, and data from PDFs online. True client-side redaction with metadata removal and zero server uploads.

pdf redactordocument privacyredact pdf
Manhwa & Webtoon Panel Cropper thumbnail

Manhwa & Webtoon Panel Cropper

image

Stitch and slice long vertical manhwa, webtoon, and manga strips into individual panels online. 100% private in-browser cutter with no file size limits.

manhwa cropperwebtoon splittermanga tools
Remove Silence from Audio thumbnail

Remove Silence from Audio

audio

Automatically detect and remove dead air, pauses, and silent gaps from audio files. 100% private browser tool powered by FFmpeg WebAssembly.

audio editorsilence removerpodcast tool
Audio Trimmer thumbnail

Audio Trimmer

audio

Trim, cut, and join MP3, WAV, and audio tracks in your browser for free. 100% private client-side audio cutter with zero file size limits.

audio editormp3 cutteraudio trimmer
VCF to CSV/Excel Converter thumbnail

VCF to CSV/Excel Converter

data

Convert iPhone/Android .vcf contact files to clean CSV or Excel formats instantly. 100% private, client-side processing with zero server uploads.

vcf to csvvcard to excelcontact converter
All-in-One Image Converter thumbnail

All-in-One Image Converter

image

Convert JPG, PNG, WEBP, HEIC, and TIFF images in batch online for free. Fast, private client-side converter with zero file size limits or server uploads.

image converterbatch converterheic to jpg

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