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Changelog

Every update and improvement we ship to PDF Summary AI.

v2.12026-07-17

Performance & Conversion Optimization

In-session upload on landing page — try without signing up
Enhanced yearly pricing display with savings highlight
Google Analytics & Tag Manager integration ready
NPS feedback modal after 7 summaries
Quick thumbs-up/down feedback on summaries
Activation reminder email for new users
Trial expiring email with 20% discount offer
UTM tracking for marketing attribution
AI max_tokens increased to 4096 for better summaries

v2.02026-07-12

Security & Infrastructure Overhaul

Upstash Redis token rotated and secured
Cleaned up all exposed credentials
Removed unused analytics dependencies
Content Security Policy tightened
Cron-based subscription management improved

v1.92026-07-06

Multi-Language & Payments

8-language support (EN, ZH, JA, KO, ES, FR, DE, RU)
Creem payment integration for international users
Alipay & WeChat Pay manual verification for Chinese users
3-day Pro trial with automatic downgrade
Win-back email sequence for churned users

v1.52026-06-15

API & Developer Platform

Public API v1 with Bearer token authentication
API key management dashboard (5 keys per user)
Usage tracking and logging for API calls
Streaming SSE summarization endpoint
Developer documentation at /api-docs

v1.02026-06-01

Public Launch

PDF upload and AI summarization with DeepSeek
Multi-provider fallback (DeepSeek → Groq → SiliconFlow)
Summary caching to reduce costs
Content Security Policy and CSRF protection
Rate limiting for all API endpoints

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