All File Converter is a cross-platform cloud microservice designed by AI-Robot Studio for fast conversion of files in dozens of formats directly within the Telegram messenger window.

The project solves a key problem for modern users: the need to install heavy third-party converters, endure intrusive ads on free websites, or transfer confidential documents to unverified web resources.

1. Key Features and Solved Tasks

The bot replaces an entire complex of desktop utilities and online services, providing instant file processing in just a few clicks:

  • One-click conversion: The user sends a file to the chat, and the bot automatically recognizes its signature and offers inline buttons with permitted target formats.
  • Over 80 supported directions: Processing of office documents (Word, Excel, PowerPoint, PDF, RTF, TXT), all image formats, video files, audio tracks, e-books (EPUB, FB2, MOBI), vector graphics, fonts, and subtitles.
  • Fine-tuning quality: The ability to select bitrate for MP3 (128, 192, 320 kbps), text encoding (UTF-8, Windows-1251), frame rate for GIF, and image compression level.
  • Built-in Optical Character Recognition (OCR): Quick extraction of printed text from photos, scans, and PDF files in dozens of languages.

2. Unique Features for Telegram

The bot is designed with deep integration into the Telegram platform capabilities and offers features unavailable in standard converters:

  • Converting video to a "Video Note" (Round Video): Any regular video (MP4, MOV, AVI) is automatically cropped to a 1:1 aspect ratio, re-encoded into a native Telegram video message, and sent as a round video note.
  • Audio and video to Voice Note: Converting audio files or sound tracks from videos into native OGG Opus voice notes with waveform rendering and playback speed support (1.5x / 2x).
  • Audio Extraction: Instant saving of the audio track from video clips, interviews, or lectures in MP3 format.
  • Converting Animated Stickers (TGS): Transforming Telegram vector stickers into standard GIF, APNG, and WebP formats.

3. Service Model and Pricing Policy

The bot operates on a transparent and balanced Freemium model for comfortable daily use:

  • 🎁 5 free conversions every 24 hours: Each user receives 5 free conversions per day for files up to 20 MB. The limit automatically resets at midnight.
  • 💳 Affordable paid mode: For files ranging from 20 to 100 MB or when the daily limit is exhausted, a minimal fee applies — just $0.02 per file plus $0.001 for each megabyte exceeding the free threshold.
  • Convenient top-up methods: Support for payments via Telegram Stars (directly in the messenger), bank cards and SBP (Lava), cryptocurrency (CryptoBot), and international Visa/Mastercard cards (Tribute).
  • Referral system and promo codes: The ability to earn bonus balances by inviting friends and activating gift codes.

4. Data Security and Storage Policy (up to 15 minutes)

The confidentiality of user files is ensured by a strict isolated processing policy:

  • Temporary session (up to 15 minutes): Uploaded source files and generated converted files are stored in a temporary isolated storage for no more than 15 minutes. This time is sufficient to download the result or convert the file to another format without re-uploading.
  • Automatic deletion: A background cleanup daemon permanently deletes temporary files from the physical disk immediately after the 15-minute timer expires.
  • Full GDPR compliance: The bot implements /privacy commands for instant export of user data archives in JSON format (Art. 20 GDPR) or complete account deletion (Art. 17 GDPR).

5. How to Start Using the Bot

The service does not require website registration or password entry. To convert your first file:

  • Open the bot in Telegram: @all_file_converter_bot.
  • Click the "Start" button.
  • Send any document, photo, video, or audio recording to the chat and select the desired format on the keyboard.