Built-in voice
Select Built-in English voice in the reader. Listen for 5 generated minutes as a guest on any supported page, then verify your email for 30 more minutes. No API key or separate provider account is needed. Keep the original PDF tab open during sign-in; it refreshes voice access when you return. Free capacity may be temporarily full without consuming your personal minutes.
Voice allowance and top-ups
V1 includes 10 hours of generation; optional $9 top-ups add 20 hours without renewal. Speed does not change the charge. Prefetched audio counts even when unheard. Recent audio cached in the tab replays free; reloads or cache eviction can require generation again. Failed generation releases its reservation. For an interrupted download, contact us with the approximate time and account email for a correction; do not include document text.
Built-in voice stopped
Refresh your balance first. If the service is busy, wait a minute and try again. If it remains unavailable, contact ReadAlongPDF.online support. You do not need to contact DeepInfra or open an API account. We handle the built-in voice integration.
PDF support
Use an unencrypted English PDF with selectable text, no more than 50 MB or 500 pages. Scans, image-only files, damaged files, and dynamic XFA forms are outside V1.
Advanced: your own TTS endpoint
Your base URL must use HTTPS, permit this browser origin through CORS, and implement the OpenAI-compatible POST /v1/audio/speech route. Check authentication, account limits, model, voice, and returned audio format.
Reading order
Columns, footnotes, and formulas can extract out of order. Inspect the sentence list and choose another starting sentence. The original page remains the authoritative source.
Local progress
Progress belongs to this browser profile and can be removed by browser cleanup. It is not a cloud backup or cross-device sync.
License and sign-in
Sign in with the email used for your purchase to view your license and active browser profiles. You do not need to email your PDF to get help with account access.
Refunds
Each V1 purchase or voice top-up has a 14-calendar-day full-refund window, even after use, and no automatic renewal. Email support from your purchase email and include the order reference.