Free Online Tools
PDF, images, video, audio, mic, and webcam: simple tools that work directly in your browser. Free, no sign-up, and your files are never uploaded.
- Sign a PDFAdd your handwritten signature to a PDF (drawn, typed, or uploaded) and download it.
- Merge PDFCombine several PDFs into a single file, in the order you choose.
- Split PDFExtract pages from a PDF or split it into several files.
- JPG to PDFTurn your photos and images (JPG, PNG, WebP) into a single PDF file.
Images
- HEIC to JPGConvert your iPhone's HEIC photos to JPG or PNG, in batches.
- Compress ImageReduce the size of your JPG, PNG, and WebP photos with no visible loss of quality.
- Resize ImageChange the size of your images in pixels or percentage, in batches.
- Image to Text (OCR)Copy the text from a photo, a scan, or a screenshot using OCR.
- QR Code GeneratorCreate a custom QR code (link, Wi-Fi, vCard…) and download it as PNG or SVG.
Video
- Screen RecorderRecord your PC or Mac screen with sound, in MP4, directly in your browser.
- Convert MP4 to MP3Extract the sound from an MP4, MOV, or WebM video into an MP3 file.
- Cut / Trim VideoTrim the start or end of a video and keep only the part you want.
- Video to GIFTurn a video clip into a good-quality animated GIF.
- Video DownloaderDownload videos from TikTok, Instagram, X, Facebook… as MP4.
Audio & Voice
Mic & Webcam
Free online tools, no sign-up required
Chatzam brings together the everyday tools everyone needs at some point: sign or merge a PDF, convert an iPhone photo, shrink an image, trim a video, extract audio from a clip, transcribe a recording, or test your mic before a video call. They're free, require no sign-up, and work on both computer and mobile.
Your files stay on your device
These tools run directly in your browser thanks to open-source technologies (pdf.js, pdf-lib, FFmpeg, Tesseract, Whisper). Your documents, photos, videos, and recordings are never sent to our servers: it's faster, and much safer for your personal data.
Also available: free AI assistants
Alongside these tools, Chatzam offers dozens of free AI assistants (ChatGPT, Claude, Gemini, Mistral…) for writing, summarizing, translating, or learning, with no account required.
Frequently Asked Questions
Are Chatzam's tools really free?
Yes, completely free and with no sign-up. The site is funded by advertising.
Are my files sent to a server?
No. These tools process your files directly in your browser. Only the processing engines (for example FFmpeg or the Whisper model) are downloaded, then cached.
Do the tools work on phones?
Yes, most work on smartphones and tablets. The screen recorder requires a computer, since mobile browsers don't support screen capture.
Is there a limit on file size or number of files?
There's no quota. The only limit is your device's memory, especially for very large videos.