DJAI Academy

Free public tools by DJAI Academy

Free online tools for video, PDFs, images, AI, and digital work.

Convert, cut, compress, or manage video, audio, PDFs, images, documents, QR codes, and data immediately. Core tools run in your browser with no account required.

Video to Text

Video to Text Converter — Free, No Sign-Up

Transcribe video or audio with AI in your browser. No email, no account, and no media upload to DJAI. Download TXT, SRT, VTT, or JSON.

Video to TextNo Sign-UpLocal AI
Open toolOpen SEO Tool

SEO Screaming Toad — SEO Crawler + MCP

Audit technical SEO, JavaScript, canonicals, hreflang, sitemaps, and structured data with local evidence and 23 MCP tools for AI agents.

SEO CrawlerMCPOpen Source
Open toolQR Generator

Free QR Code Generator

Create custom QR codes for websites, menus, profiles, forms, and campaigns. Download PNG or SVG files with no sign-up.

QR codePNGSVG
Open toolImage Tools

Free Image Converter and Resizer

Resize, compress, remove backgrounds, and convert JPG, PNG, WebP, and HEIC images. Process batches and download a ZIP while files stay on your device.

BackgroundHEICBatch
Open toolPDF Tools

DJTools Free PDF Tool Set

Merge, split, compress, convert, rotate, watermark, and password protect PDFs for free. Files stay on your device.

PDFAES-256Private
Open toolMedia Tools

Free Audio and Video Converter

Convert MP3, WAV, M4A, MP4, MOV, and WebM, extract audio, or compress video with FFmpeg in your browser without uploading files.

MP3MP4FFmpeg
Open toolDocument Tools

DJAI Document Converter

Convert Word (DOCX) to PDF, HTML, Markdown, and text, extract PDF text, or run Thai and English OCR in your browser.

DOCXOCRPrivate
Open toolAI Tools

AI Context and Token Tools

Count tokens, clean context, preview RAG chunks, and package multiple files for AI without uploading content.

TokensRAGContext
Open toolSpreadsheet Tools

CSV, JSON and Excel Tools

Convert, clean, merge, and split CSV, JSON, and XLSX files privately for data workflows and automation.

CSVJSONXLSX
Open tool

MOBILE APP

Use advanced document tools on your phone.

Cam PDF Scanner: Sign & QR brings a scanner, PDF signer, QR generator, and productivity workflows into one mobile app.

See the Cam PDF app

START WITH A TASK

Shortcuts for popular workflows.

GIF to MP4 converterMake animated GIFs smaller without uploadingCompress video toward 10 MBSet an approximate 10 MB target in your browserCompress video toward 25 MBPrepare video for a 25 MB upload limitCompress video toward 50 MBReduce video toward an approximate 50 MB targetCompress video toward 100 MBReduce larger video without sending it to a serverCrop video to 16:9 or 9:16Create a centered crop for web or social videoResize video to 1080p or 720pChange resolution while preserving aspect ratioExtract video frames at intervalsSave up to 100 JPG or PNG frames as a ZIPResize an image toward 200 KBMeet form and email targets with an approximate resultCompress an image toward 100 KBPrepare an image for smaller upload limitsRemove JPG, PNG or WebP backgroundsCreate a transparent PNG in your browserConvert Word (DOCX) to PDFCreate a private PDF with paper, margin, and page-number controlsCreate an email QR codePrefill the recipient, subject, and messageGenerate a complete favicon packageDownload ICO, Apple, PWA, manifest, and HTML filesCombine JPG images into one PDFBuild a PDF privately in your browserConvert PDF pages to JPGExport every page as an image or ZIPVideo to textTranscribe in your browser with no sign-upOCR scanned PDFs and imagesRecognize Thai or English text in your browserCount document tokens for AICheck context use without uploading contentCSV to JSONPrepare data for APIs

Why free?

Free tools are how we build trust.

These tools are part of the DJAI ecosystem: they help the public, demonstrate our product thinking, and create a practical bridge to custom development work for businesses that need their own internal tools or automation systems.

Coming next

More tools are planned.

Ecosystem

Built by connected teams with real products.

Develop With DJAICustom web tools, apps, automation systems, and AI-powered platforms.DJAI × Siamese CatThe technology, product, and business-growth partnership across the Siamese Cat ecosystem.Siamese Cat DevSoftware development, product design, and technical implementation partner.Siamese Cat CafeThe community cafe and real-world brand connected to our builder ecosystem.Siamese Cat Creative ClubCreative workflows, visual production, and creator-focused experiments.

COMPLETE TOOL DIRECTORY

Find every free DJAI tool by task

Browse working tools for SEO audits, QR codes, images, PDFs, media, documents, AI context, and spreadsheet data.

Brand and favicon tools

Create favicons, app icons, a manifest, and installation code from one image in your browser.

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Favicon GeneratorGenerate ICO, PNG, Apple touch, maskable icon, and web manifest files.

SEO crawler and MCP

Audit technical and JavaScript SEO with crawl evidence and bounded MCP tools for AI agents.

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QR code tools

Create QR codes for links, Wi-Fi, contacts, text, and communication workflows.

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URL QR Code GeneratorTurn a website or URL into a QR code.Wi-Fi QR Code GeneratorLet guests scan to join a Wi-Fi network.vCard QR Code GeneratorCreate a scannable digital contact card.Text QR Code GeneratorEncode text or reference information in a QR code.Email QR Code GeneratorOpen a prepared email with recipient and message.WhatsApp QR Code GeneratorOpen a WhatsApp conversation from a scan.QR Code Generator with LogoCreate a branded QR code with a logo.

Image tools

Convert, compress, resize, remove backgrounds, and prepare images for upload.

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JPG to PNGConvert JPG images to PNG.PNG to JPGCreate a widely compatible, smaller JPG.JPG to WebPPrepare WebP images for faster websites.PNG to WebPReduce PNG size while preserving transparency.WebP to JPGConvert WebP for systems that require JPG.WebP to PNGConvert WebP to PNG for graphics.AVIF to JPGCreate a broadly supported JPG from AVIF.AVIF to PNGPreserve crisp graphics and transparency.HEIC to JPGConvert iPhone HEIC photos to JPG.Compress ImageReduce JPG, PNG, and WebP file size.Resize ImageResize by pixels, percentage, or preset.Image to 100 KBPrepare an image for a 100 KB upload limit.Image to 200 KBReduce an image toward a 200 KB target.Image to 500 KBPreserve useful detail under a 500 KB target.Remove Image BackgroundCreate a transparent-background PNG.Remove Image MetadataRemove EXIF and identifying metadata.Passport Photo ResizerCrop and size a photo for documents.

PDF tools

Merge, split, convert, organize, protect, and clean PDF files.

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Merge PDFCombine multiple PDFs in a chosen order.Split PDFSplit a PDF by ranges or page count.Compress PDFReduce PDF size with quality presets.Images to PDFCombine multiple images into a PDF document.JPG to PDFCombine JPG images into a PDF.PNG to PDFCombine PNG images into a PDF.WebP to PDFConvert WebP images into a PDF.PDF to JPGExport PDF pages as JPG images.PDF to ImagesExport PDF pages as image files.PDF to PNGExport PDF pages as lossless PNG images.Rotate PDFRotate every page or selected pages.Watermark PDFAdd a text, image, or logo watermark.Protect PDFAdd a password and document permissions.Organize PDFReorder pages and omit unwanted pages.Extract PDF PagesCreate a PDF from selected pages.Delete PDF PagesRemove individual pages or page ranges.Reorder PDF PagesDefine a new final page order.Add PDF Page NumbersAdd page numbers in a chosen position.Remove PDF MetadataRemove author, title, and creator metadata.

Audio and video tools

Convert audio and video, extract sound, and reduce video size in the browser.

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MP3 to WAVCreate WAV audio for editing workflows.WAV to MP3Reduce audio size for sharing.M4A to MP3Convert M4A for widely supported playback.MP4 to MP3Extract MP3 audio from an MP4 video.Extract Audio from VideoCreate MP3 from MP4, MOV, WebM, or MKV.Video ConverterConvert between common video formats.MKV to MP4Create an MP4 that is easier to play and share.AVI to MP4Convert legacy AVI video to MP4.MP4 to MOVPrepare video for workflows that require MOV.MP4 to WebMConvert video for modern websites.WebM to MP4Create a more widely compatible MP4.MOV to MP4Convert iPhone and camera MOV video.Video CutterChoose exact start and end times before export.Compress VideoReduce size by quality, resolution, or target.Compress Video to 10 MBPrepare video for a small upload limit.Compress Video to 25 MBReduce video toward a 25 MB target.Compress Video to 50 MBReduce video toward a 50 MB target.Compress Video to 100 MBReduce video toward a 100 MB target.Video CropperCenter-crop video to common aspect ratios.Video ResizerChange video width while preserving its ratio.Video MergerOrder several clips and export one MP4.Video to GIFChoose a clip, width, and frame rate.GIF to MP4Create a shareable MP4 from an animated GIF.Remove Audio from VideoExport an MP4 without an audio stream.Add Audio to VideoReplace or mix audio with a video.Video Speed ChangerChange playback speed from 0.5× to 2×.Extract Frames from VideoExport JPG or PNG frames with an optional ZIP.Rotate VideoRotate video by 90 or 180 degrees.

Document tools

Convert DOCX, extract PDF text, and run document OCR.

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DOCX to PDFConvert Word to PDF with page controls.DOCX to HTMLCreate clean semantic HTML from Word.DOCX to MarkdownPreserve headings, lists, links, and tables.DOCX to TextExtract plain text from Word.PDF to TextExtract text from selected PDF pages.PDF to WordCreate DOCX from selectable PDF text.Document OCRRecognize text in scanned PDF, JPG, and PNG.

AI context tools

Count tokens, clean context, plan RAG chunks, and package prompts.

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Token CounterCount tokens, words, characters, and context use.PDF to AI MarkdownPrepare PDF content for AI and RAG.Context OptimizerRemove repeated text and unnecessary tokens.RAG Chunk CalculatorPreview chunk size and overlap.Prompt PackagerCombine files into clearly bounded context.

Spreadsheet tools

Convert, clean, merge, and split CSV, JSON, and XLSX data.

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CSV to JSONPrepare tabular data for APIs.JSON to CSVMove JSON data into spreadsheets.CSV CleanerRemove empty rows, whitespace, and duplicates.Merge CSVCombine files by matching columns.Split CSVDivide large files by row count.CSV to XLSXCreate an Excel workbook from CSV.XLSX to CSVExport an Excel worksheet as CSV.