Smallpdf Pro?

KINDAYou can build the valuable core, but the established product has meaningful operational complexity. Pick one narrow promise for v1.

BUILD FIRST

One specific customer type and one primary use case
A vertical slice that completes the main job without manual workarounds
Visible limits, review steps, and a fallback when an external dependency fails

LEAVE FOR LATER

Broad third-party integrations
High-scale collaboration, syncing, and permissions
Automation that can cause harm without human review

RESEARCH NOTES

What this tool actually does.

Checked 2026-09-06

Smallpdf Pro is the paid subscription tier of Smallpdf, a web-based PDF tool suite. Official pricing pages describe Pro as unlocking unlimited access to 40+ PDF tools (free tier gets limited access to ~21 tools with 2 conversions/day). Pro-specific features include OCR, strong compression, batch conversion, edit-text, digital signatures, unlimited AI-tool access, full mobile/desktop app access, zero ads, and priority support. Pro includes a full Sign.com Premium subscription for e-signing, with unlimited signees. Billing is auto-renewing monthly or yearly (yearly is ~25% cheaper per month), with a 7-day free trial requiring payment details. Teams plans (2+ seats) add centralized billing, volume discounts, and member access management. All plans use 256-bit TLS file transfer and integrate with Google Drive, Dropbox, and a Chrome extension.

SOURCES

RESEARCHED BUILD PROMPT

Give this to your coding agent.

Build a replacement for Smallpdf Pro: a web-based PDF utility suite, not a clone of the Smallpdf brand, logo, color scheme, or UI. Core workflow: user drags-and-drops a PDF, selects a tool from a toolbar (Convert, Compress, Merge, Split, eSign, OCR, Edit, Rotate, Protect), configures options, and receives a processed downloadable file. Support chaining multiple operations (e.g., compress then merge) in one session and optional Google Drive/Dropbox file import. User-facing requirements: upload progress bar, per-tool option panels, task queue with status, secure temporary file storage with auto-deletion, clear error messages for corrupt/oversized files, and download links that expire. Technical requirements: server-side processing via a job queue (BullMQ or similar), convert via LibreOffice/PDF engines, strong compression via Ghostscript, OCR via Tesseract, PDF manipulation with pdf-lib and pdf.js, e-signature via a simple embedded signature canvas and signature certificate recorded in PDF metadata; Node.js backend with React frontend (or similar SPA). Store files encrypted (AES-256) and enforce per-file size limits. Deliverable includes README with setup, environment variables, architecture overview, and known limitations (e.g., OCR accuracy, no native mobile/desktop apps, no billing/account system, no AI question generator, no team admin console).

Do not copy the original brand, proprietary assets, or UI; create an original visual system.

Out of scope for v1: enterprise-scale infrastructure, broad integrations, and feature parity with the reference product.

Visit the official product page