Exact-byte dummy files for API & storage QA
Produce JSON, CSV, images, WAV, synthetic MP4/WebM shells, and more padded or trimmed to a precise byte footprint for boundary regressions.
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Approximate sizes fail real bugs
Upload pipelines stitch multiple buffers. Failures manifest at limits like exactly `quota + 1`. Client-generated blobs scripted to the byte dodge OS-specific sparse-file tricks.
Shareable shortcuts
Example: `/generator?ext=json&bytes=750000` pins JSON UTF-8 output to seven hundred fifty thousand bytes without extra bookkeeping.
Binary formats differ internally (WAV sample alignment vs JPEG EOIs). Toggle **Exact size** manually if you prefer KB/MB shorthand in the UI.
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