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Utility Tools

Everyday utilities and developer tools running 100% locally in your browser.

Utility

Everyday utilities.

Barcode Generator

Generate 1D barcodes in Code 128, EAN-13, and UPC formats.

Bulk File Renamer

Rename multiple files with sequential numbering and pattern rules.

Duplicate File Finder

Detect identical duplicate files via client-side SHA-256 hashing.

PDF Compare

Compare text content and editorial revisions between two PDF documents.

Password Generator

Generate strong cryptographic passwords with custom entropy rules.

UUID Generator

Generate RFC 4122 version 4 UUIDs individually or in bulk with zero latency.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes for text and files.

URL Encoder / Decoder

Encode and decode URLs, query strings, and URI components with parameter breakdown.

Markdown Previewer

Edit Markdown with live synchronized preview, syntax shortcuts, and HTML export.

Timestamp Converter

Convert Unix epoch timestamps to human dates and parse calendar dates into seconds/ms.