For studying, the most useful free Telegram bots are @PhotoToPdfMakerBot (turn photos of notes or homework into one PDF, convert Word, Excel and PowerPoint to PDF, merge PDFs) and @TranscribeVoiceBot (turn a recorded lecture or a voice message into text). @MakeVideoNoteBot pulls the sound out of a video lecture as an MP3, and @BgRemoverPhotoBot shrinks photos so they fit upload limits. All four are free within a daily limit and are made by us, HandyBots.
At a glance
| Bot | Best for | Free |
|---|---|---|
| Photo to PDF | Notes, homework and documents as one PDF | Free: 20 PDF actions and 10 document conversions a day |
| Voice to Text | Lecture recordings and voice messages to text | Free: 30 minutes a day |
| Video to Round Video Note | Sound of a video lecture as MP3 | Free: 20 conversions a day |
| Background Remover | Photos that fit upload limits | Free: 10 background removals and 30 edits a day |
| Live Timer | Pomodoro study sessions | Free, no daily limit |
| Anonymous Questions | Anonymous questions from classmates | Free: up to 30 questions a day per sender |
Photo to PDF
@PhotoToPdfMakerBotBest for: Notes, homework and documents as one PDF
Photograph your pages, send them in order and tap Make PDF — up to 30 pages in one file. It also converts DOCX, XLSX, PPTX, ODT and RTF to PDF on a phone, merges 2 to 20 PDFs and compresses a PDF that is too heavy for an upload form.
Free: 20 PDF actions and 10 document conversions a day
Works without Telegram Premium
Voice to Text
@TranscribeVoiceBotBest for: Lecture recordings and voice messages to text
Send an audio or video recording (up to 20 minutes and 20 MB per file) and get the text back — handy for notes from a short talk or a classmate's voice message. In a study group it can transcribe every voice message automatically.
Free: 30 minutes a day
Works without Telegram Premium
Video to Round Video Note
@MakeVideoNoteBotBest for: Sound of a video lecture as MP3
Send the video and tap MP3 to listen to it on the go; a voice message can be saved as an MP3 too.
Free: 20 conversions a day
Works without Telegram Premium
Background Remover
@BgRemoverPhotoBotBest for: Photos that fit upload limits
Compresses a photo with no visible quality loss, converts iPhone HEIC to JPG and resizes by the long side — useful when a portal accepts only JPG or small files.
Free: 10 background removals and 30 edits a day
Works without Telegram Premium
Live Timer
@LiveTimerBotBest for: Pomodoro study sessions
Tap 🍅 25 min for a focused study block; when it rings, the bot offers a 5-minute break and then another 25. Any countdown from 5 seconds to 24 hours works too, up to 5 at once.
Free, no daily limit
Works without Telegram Premium
Anonymous Questions
@AskAnonFriendBotBest for: Anonymous questions from classmates
Post your personal link in a class chat, your story or bio; classmates ask what they wouldn't ask out loud, and you see only the text — never who asked.
Free: up to 30 questions a day per sender
Works without Telegram Premium
Frequently asked questions
How do I turn photos of my notes into one PDF on my phone?
Send the photos to @PhotoToPdfMakerBot in page order (as files if you want sharp text) and tap Make PDF — you get one PDF with up to 30 pages.
Can a Telegram bot turn a lecture recording into text?
Yes. @TranscribeVoiceBot transcribes audio and video files up to 20 minutes and 20 MB each, 30 minutes a day for free. Split a longer lecture into parts.
Can I convert Word to PDF without a computer?
Yes. Send the DOCX file to @PhotoToPdfMakerBot — it replies with a PDF. 10 document conversions a day are free.