PDFShift Alternative
PDFBolt HTML to PDF API
A cloud HTML to PDF API alternative to PDFShift, adding AI template generation and a Template Designer.
The same Chromium rendering you get from PDFShift, plus built-in compression and 100 free PDFs per month.
AI Templates
vs Code-Only
Compression
vs None
PDF/X + CMYK
vs RGB Only
Team Accounts
vs Single-User
Chromium Cloud API
PDFShift
Cloud Chromium API that converts HTML and URLs to PDF, PNG, JPEG, or WebP, available since 2018. It includes reusable templates, watermarks, password protection with permissions, custom headers and footers, a sandbox mode for free testing, and delivery to your S3 or Google Cloud Storage bucket. Usage is billed in credits, one credit per 5MB of output.
Chromium Cloud API
PDFBolt
Cloud HTML to PDF API that renders with Chromium. Its Handlebars templates add AI generation, a Template Designer with live preview, and a ready-to-use gallery. It also brings PDF/X print production with CMYK and ICC profiles, plus built-in compression. Three endpoints (Direct, Sync, Async) deliver results through HMAC‑signed webhooks, with conversion retries and direct S3 upload.
PDFShift vs PDFBolt: Feature Comparison
How the two Chromium APIs compare on templates, PDF features, and pricing.
PDFShift | PDFBolt | |
|---|---|---|
| Rendering | ||
Engine | Chromium | Chromium |
CSS Grid, Flexbox, modern JavaScript | ||
| Templates | ||
Dynamic templates | ||
AI template generation | ||
Template Designer & gallery | ||
| PDF Features | ||
Compression | ||
Tagged (accessible) PDFs | ||
Watermark (text/image) | ||
Encryption & password protection | ||
| Output | ||
Print output (PDF/X + CMYK) | ||
Screenshots (PNG/JPEG/WebP) | ||
| Integration | ||
Webhooks | Callback | HMAC-signed |
Direct S3 upload | ||
| Pricing | ||
Free tier | 50/mo | 100/mo |
Starter plan | $9/mo (500 PDFs) | $19/mo (2,000 PDFs) |
Why Switch from PDFShift to PDFBolt
PDFShift and PDFBolt are both Chromium cloud APIs with templates and webhooks.
PDFBolt goes further with AI template generation, a Template Designer, print-ready output, and built‑in compression.
AI generation, Template Designer, gallery
Both services store templates with variables, but PDFShift manages them as code through its API. With PDFBolt you design them visually with live preview, generate them from an AI prompt, or start from a gallery layout, and every change is versioned.
Signed webhooks and conversion retries
Background jobs stay reliable: every async webhook is HMAC-SHA256 signed so you can trust its source, failed conversions retry on a schedule you define, and you are billed only for successful conversions. PDFShift sends a plain callback with no documented signature.
Built-in compression
Shrink image-heavy PDFs with four levels, from lossless to high, without reaching for a separate tool. PDFShift has no compression option, so large files stay large.
Print-ready PDF/X and CMYK
Generate print-ready CMYK PDFs as PDF/X-1a or PDF/X-4 that pass Adobe Preflight, and convert RGB to CMYK with FOGRA, SWOP, or GRACoL profiles. PDFShift outputs RGB only.
Automation platform integrations
PDFBolt provides integration guides for Zapier, Make, n8n (community node), and more. PDFShift has no such guides and archived its official SDKs in 2020.
Team collaboration
PDFBolt adds team members with Admin and Member roles, plus shared templates, API keys, and usage logs. PDFShift has no team accounts or shared workspace.
PDFShift vs PDFBolt: A Closer Look
Where PDFShift and PDFBolt diverge on templates, async delivery, and developer experience.
Building Templates
PDFShift
PDFShift stores templates through its /templates endpoint. You create one by posting HTML with a slug, then generate a document by sending your data to /templates/{slug}.pdf (or .html, .png, .jpeg, .webp). Templates are created, updated, and deleted as raw HTML through the API, so you write and version them in your own code.
PDFBolt
PDFBolt gives you three ways to build a Handlebars template: start from scratch in the Template Designer, customize a layout from the gallery, or have AI generation build one from a prompt and reference files. Each opens in a live-preview editor where you save drafts, publish a version when it is ready, and keep a full version history. You generate a document by sending a templateId and JSON templateData.
Async and Delivery
PDFShift
PDFShift conversions are synchronous by default. Add the webhook parameter and it returns a queued response right away, then sends the result to your URL once the PDF is ready, as a plain callback without a documented signature. The s3_destination parameter saves output straight to your own Amazon S3 or Google Cloud Storage bucket.
PDFBolt
PDFBolt offers three endpoints – Direct, Sync, and Async – so you pick the mode per request. The async endpoint delivers the result through an HMAC-SHA256 signed webhook and retries failed conversions on the schedule you set with retryDelays. You are charged only for successful ones. You can upload the finished PDF straight to your own S3-compatible bucket.
Languages and Integrations
PDFShift
PDFShift archived its official Python, Node.js, and PHP libraries in 2020, so today you call the API with a standard HTTP client. Its docs include code samples for Python, Node.js, Java, C#, PHP, Go, and Ruby, but there are no maintained SDKs or automation-platform integrations.
PDFBolt
PDFBolt keeps maintained quick-start guides for seven languages: Python, Node.js, Java, C#, PHP, Go, and Rust. It also connects to automation platforms like Zapier, Make, and n8n (community node). Before writing a line of code, you can test any conversion in the playground and explore every endpoint, schema, error response, and webhook payload in the interactive OpenAPI Reference.
How to Migrate from PDFShift to PDFBolt
Both are REST APIs, so migrating is a few-line change: a new endpoint, your PDFBolt API key, and one renamed field. See it in Node.js, Python, PHP, C#, and cURL.
PDFShift (HTTP)
const fs = require("fs");
async function generatePdf() {
const response = await fetch("https://api.pdfshift.io/v3/convert/pdf", {
method: "POST",
headers: {
"X-API-Key": "sk_XXXXXXXX",
"Content-Type": "application/json"
},
body: JSON.stringify({ source: "https://example.com" })
});
if (!response.ok) throw new Error("HTTP " + response.status);
fs.writeFileSync("webpage.pdf", Buffer.from(await response.arrayBuffer()));
}
generatePdf();
PDFBolt
const fs = require("fs");
async function generatePdf() {
const response = await fetch("https://api.pdfbolt.com/v1/direct", {
method: "POST",
headers: {
"API-KEY": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
"Content-Type": "application/json"
},
body: JSON.stringify({ url: "https://example.com" })
});
if (!response.ok) throw new Error("HTTP " + response.status);
fs.writeFileSync("webpage.pdf", Buffer.from(await response.arrayBuffer()));
}
generatePdf();
When to Choose PDFShift
Need to stamp watermarks (text or image) onto generated PDFs
Need to password-protect PDFs or restrict printing, copying, or editing
Need screenshots (PNG, JPEG, WebP), not only PDF
Need up to a 15-minute timeout for slow-loading pages
Want an explicit HIPAA request flag out of the box
Need to deliver PDFs directly to Google Cloud Storage
When to Choose PDFBolt
Want AI generation, a Template Designer, and version history
Need commercial print output: PDF/X, CMYK, and ICC profiles
Need built-in compression for image-heavy PDFs
Want HMAC-signed webhooks with conversion retries for reliable background processing
Need static outbound IPs to allowlist behind a firewall
Want team collaboration with role-based access
What Developers Say About PDFBolt
See how teams save time and reduce complexity with our developer‑first PDF solution.
"It has a very intuitive User Interface and easy to use API with a great documentation. What's best, that the support is super fast and even feature requests are discussed and implemented in just a couple of days. It helps us to create individualised PDF gift cards both for digital use as well as print production on the base of modern HTML / CSS."
David Bernhard
CTO at bon-bon.de
"Amazingly, the owner personally helped solve the issues I was having creating an exported lesson plan with hyperlinks and complex styling. This is a great piece of software. But more importantly, it’s the people behind a product that truly make a company great. His willingness to support my project without payment is truly unique – a rare product and a rare individual. This product just works. Thank you, PDFBolt!"
Robert Reich-Storer
Owner of Rhythmstix and Assessify"There's a lot of products that convert to PDF out there, but this one stood out to me, because the output quality is good, it's very easy to use, and pay per use. I also love the interactive API documentation, my request just worked out of the box in my app. And of course the focus on privacy, which is important when working with GDPR data. (...) PDFBolt just works, so I can focus on the business logic."
Malte Bartels
Cloud EngineerFrequently Asked Questions
Common questions about PDFShift, Chromium rendering, and switching to PDFBolt.
Does PDFShift use Chromium?
Does PDFShift support reusable templates?
Can PDFShift produce print-ready PDF/X or CMYK?
Does PDFShift compress PDFs?
Does PDFBolt do watermarks, encryption, or screenshots?
How do I migrate from PDFShift to PDFBolt?
More HTML to PDF Comparisons
Different tools, different tradeoffs – see how PDFBolt stacks up against other HTML to PDF approaches.