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Publishing Calc – Ebook File Size Estimator
x402
Publishing Calc – Ebook File Size Estimator is a paid API for AI agents from publishing-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Estimates ebook file size in KB and MB from word count, image count, average image size, and adjustable compression/overhead parameters.
Price / call$0.02
Success—
StatusUnknown
How this service works
Estimate ebook file size in KB and MB from word count, image count and average image size (all adjustable).
Output
Returns a structured object with the estimated total ebook file size in KB and MB, a breakdown of compressed text KB, images KB, overhead KB, raw text KB, the percentage of file size from images, the parameters used (bytesPerWord, textCompression), a human-readable summary and verdict, plus optional disclaimer and reasons fields.
Example use cases
Estimating KDP upload file size
“I'm about to upload my novel to Amazon KDP — it's 82000 words with no images. Can you estimate how big the ebook file will be in MB so I know if it'll fit within their size limits?”
Photo-heavy cookbook file size check
“I'm writing a cookbook with around 40000 words and 80 photos, and each photo is roughly 300 KB on average. What's the estimated total ebook file size I should expect?”
Optimizing ebook size before publishing
“My travel guide is 55000 words with 50 images averaging 250 KB each. If I reduce the average image size to 100 KB, how much smaller would the ebook file get? Can you run both estimates?”
Technical details
Endpoint
GEThttps://publishing-calc.x402tookit.com/ebook-size?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, parameterized estimate of an ebook's file size before publishing, uploading, or pricing — especially when you want to model the impact of image count, image size, or compression settings without building your own formula. Ideal for self-publishing workflows, KDP upload planning, or publishing calculators that need a breakdown of text vs. image size contributions.
Side effects
- Missing required 'words' query parameter returns an error
- Non-numeric values for numeric fields cause validation errors
- Extreme compression ratios outside 0.1–1 may produce unexpected results
- Very large word or image counts may produce unrealistic estimates if inputs are misconfigured
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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