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Data & API Compression Tools

Compress GraphQL responses, IndexedDB payloads, inline assets, robots.txt files, and binary data entirely in your browser. Reduce API payload sizes and storage overhead without server-side processing.

Data & API

5 tools

API Payload Size Optimizer
Paste any JSON API response and get actionable suggestions — remove nulls, strip empty arrays/objects, shorten verbose keys. Shows exact byte savings per optimization and GZIP wire size. Free online API payload size optimizer, no signup required.
SSE Payload Compressor
Compress Server-Sent Events data fields using LZ-String Base64 encoding — reduces streaming bandwidth for JSON-heavy event payloads. Shows per-event byte savings. Free online SSE payload compressor, no signup required.
GeoJSON Compressor
Compress GeoJSON files by reducing coordinate decimal precision and removing null properties — shows size vs accuracy tradeoff. Supports all geometry types. Free online GeoJSON compressor.
Webpack Bundle Size Visualizer
Paste a webpack stats JSON and visualize module sizes — highlights which dependencies contribute most to bundle size with optimization recommendations. Free online webpack bundle size visualizer.
TopoJSON Compressor
Compress TopoJSON files by reducing coordinate decimal precision — shows file size at 6 precision levels (1–6 decimal places) with null property removal. Free online TopoJSON compressor.