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Free image optimizer with an image compressor and converter for JPEG, PNG, and WebP. Resize and process locally.

Compress images to 100KB, 200KB, 500KB, or a custom size limit.

Crop JPEG, PNG, and WebP images with freeform, fixed ratios, or circle crops. Rotate and flip locally.

Remove backgrounds locally with AI and download a transparent PNG.

Add text or logo watermarks with custom opacity, rotation, position, and tiling.

Format, validate, and explore JSON in an interactive tree view.

Generate readable TypeScript types and interfaces from JSON.

Generate Go structs with nested types, pointers, and JSON tags.

Generate typed Python dataclasses from nested JSON data.

Export JSON as an XLSX workbook with a named worksheet and numeric or boolean cells.

Extract JSON from a selected XLSX worksheet, including dates and saved formula results.

Export JSON as delimited UTF-8 text with quoted fields and an optional download BOM.

Parse CSV or TSV into JSON, preserving text IDs or optionally converting value types.

Convert JSON objects into PostgreSQL, MySQL, or SQLite INSERT statements.

Convert common data-oriented YAML to JSON or JSON to readable YAML.

Compare two JSON documents structurally by object path and array index.

Convert Unix timestamps and readable dates across time zones.

Build cron expressions visually and preview upcoming runs.

Parse ISO 8601 dates into UTC, Unix timestamps, and local time.

Convert local dates and times between IANA time zones and UTC.

Encode and decode Unicode text as Base64 in your browser.

Encode and decode URL components or complete URLs with Unicode support.

Inspect JWT headers, payloads, and timestamp claims without uploading tokens.

Generate secure UUID v4 and sortable UUID v7 values.

Calculate MD5, SHA-256, SHA-384, and SHA-512 hashes for text or files.

Create strong random passwords with secure browser cryptography.

Convert text to camelCase, Title Case, snake_case, kebab-case, and more.

Count words, characters, sentences, paragraphs, bytes, and reading time.

Compare two texts line by line and highlight additions and removals.