Question 1

What is the difference between DocRaptor/PDFMonkey document plans and Api2Pdf pay-as-you-go pricing?

Accepted Answer

DocRaptor and PDFMonkey sell a monthly plan with a fixed number of documents included, then charge a per-document rate once you go over — you are buying a bucket of documents up front whether you use them all or not. Api2Pdf skips the bucket entirely: there is a $1 monthly base and every document is billed on the resources it actually consumed, roughly $0.001 per MB of output plus about $0.0002 per second of render time. That makes Api2Pdf's bill scale continuously with how heavy your documents are rather than jumping between fixed tiers, which tends to be cheaper at low-to-moderate volume and for small, fast-rendering documents, but can lose to a flat per-document tier once volume is very high and documents are large or slow to render.

Question 2

How does PDFShift's credit system actually work?

Accepted Answer

PDFShift does not bill per document directly — it bills per credit, and one credit covers up to 5 MB of generated output. A typical invoice or report under 5 MB costs exactly one credit regardless of whether it is 200 KB or 4.9 MB, but a heavier document with embedded images or fonts that lands at 6 MB consumes two credits, an 11 MB document consumes three, and so on. This calculator rounds your average document size up to the next 5 MB block to estimate credit consumption, so increasing average file size past a 5 MB boundary jumps your PDFShift cost in steps even though your document count did not change.

Question 3

When do PDFMonkey's boost packs beat upgrading to a higher plan?

Accepted Answer

PDFMonkey sells add-on boost packs — 1,000 extra documents for €5 — that can be stacked on top of any plan, including the €15/month Pro plan which does not otherwise allow overage. Because a boost pack works out to roughly €0.005 per document, staying on Pro and buying boost packs is frequently cheaper than jumping straight to the €60/month Pro+ tier once you are only moderately over the Pro plan's 3,000-document allowance — the crossover depends on exactly how far over you are, which is why this calculator checks the boost-pack path as its own candidate alongside the published tiers rather than assuming the next tier up is automatically the right move.

Question 4

Does document size and render time affect the price on every PDF generation API?

Accepted Answer

No, and that is the biggest structural difference between these vendors. DocRaptor and PDFMonkey charge the same price per document no matter how large or slow it is to render — a one-page receipt and a 40-page catalog with embedded images cost the same document unit. PDFShift charges by credit, where size matters only in 5 MB increments. Api2Pdf is the only vendor here where both file size and render time feed directly into the bill, since it charges for bandwidth (output size) and compute (render duration) as separate metered line items. That means the same monthly document count can cost very different amounts on Api2Pdf depending on whether you are generating small text-only PDFs or large image-heavy ones, while it costs identically on DocRaptor and PDFMonkey.

Question 5

Which PDF API is cheapest — low volume or high volume?

Accepted Answer

At low and moderate volume, Api2Pdf's pure pay-as-you-go pricing is almost always the cheapest because its only fixed cost is a $1 monthly minimum, versus a $9-plus starting plan on PDFShift or a document bucket on DocRaptor and PDFMonkey that you may not fully use. The crossover happens at high, steady volume with large or slow-rendering documents: at that point a flat per-document or per-credit tier with a low marginal overage rate can undercut Api2Pdf's continuously scaling bandwidth-and-compute bill, because the tiered vendors' overage rates get cheaper at their highest published tiers while Api2Pdf's per-unit rate never discounts with volume. Run your own document count, average size and render time through the calculator above to see which side of that crossover you land on.

Question 6

Do PDF generation APIs charge for failed or errored conversions?

Accepted Answer

Published policies vary and change over time, so always confirm directly with the vendor, but the general norm across HTML-to-PDF APIs including the ones modelled here is that you are billed for documents that were successfully generated and returned, not for requests that errored out before producing a file — a malformed HTML template or a request that times out before rendering typically does not consume a credit or document unit. Test or preview documents are commonly free or discounted on some plans (DocRaptor explicitly offers free watermarked test documents, for example), which is worth using during development so your paid usage only reflects production traffic.

Calculadora de costos de API de generación de PDF

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Planes de documentos, créditos, paquetes de refuerzo y pago por uso puro: cuatro facturas diferentes para el mismo PDF

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Preguntas frecuentes

¿Cuál es la diferencia entre los planes de documentos y el precio de pago por uso de Api2Pdf?

¿Cómo funciona el sistema de créditos de PDFShift?

¿Cuándo superan los paquetes de impulso de PDFMonkey los niveles de actualización?

¿El tamaño del documento afecta el precio de cada API de PDF?

¿Qué es más barato: volumen bajo o volumen alto?

¿Estas API cobran por las conversiones fallidas?