Univers H is a toolbox built in Dakar: design visuals, edit documents, check links and devices, communicate privately. These 20 tools are available in English — each page below opens the full tool, free of charge.
Background removerRemove the background from any photo in your browser. Full resolution, no watermark, no account — your image never leaves your device.Video downloaderPaste an Instagram, TikTok, YouTube, Facebook or X link and save the video, audio or photos in full resolution — no signup, no account.Word to PDFConvert Word (.docx) to PDF in your browser — free, no signup, no upload: your file never leaves your device. Choose A4 or Letter and orientation.Word processorWrite and format a document in your browser, like Word: tables, images, shapes. Export a native .docx or a selectable-text PDF. Free and private.Sign PDFSign a PDF in your browser: draw, import or type your signature, with an integrity seal (SHA-256 + date). Free — your file never leaves your device.Large file transferSend files up to 5 GB with a simple link. The upload resumes if your connection drops, and the file is deleted after download. Free, no account.Encrypted callStart an encrypted call or a self-destructing chat from one link. Encrypted in your browser, destroyed once read — no account, no app.Lost phone assistantLost or stolen phone? Free assistant for iPhone and Android: Find My, remote lock, carrier, IMEI, police report — without ever asking your passwords.Link checkerPaste a link to check its safety before you click: real destination, domain age, certificate, threat databases — a clear verdict with its limits.AI image detectorWas this image AI-generated? Free multi-signal forensic check in your browser — a probability with its interval and confidence, never a fake certainty.Engagement calculatorAnalyze a social account: engagement rate with its formula shown, audience, posting rhythm, Creator Score and PDF report. Every number cites its source.IMEI checkFree assistant to check a used phone: IMEI validated in your browser, iCloud and Google locks, serial number, carrier block — no login ever asked.Phone hardware testTest a phone's screen, touch, speakers, cameras and sensors in your browser. Score out of 100 and PDF report to share — nothing leaves your device.Internet speed testTest download speed, response time, stability and latency under load — then get a plain-language diagnosis of the likely cause. Free, no signup.CV makerBuild a professional CV in your browser: templates, live preview, PDF with real text. Free, no account — your drafts stay on your device.Contract generatorDraft a contract in minutes: 9 contract types, dozens of industry templates, live preview, PDF and Word export. Free, no account, in your browser.QR code generatorCreate QR codes for Wi-Fi, WhatsApp, links and contact cards. Style them with colors and a logo — every style is verified to scan. Free, in your browser.Poster makerDesign posters, flyers, social posts, menus and business cards in your browser: your logo and brand applied, print-ready PDF export — free, no upload.Media workshopCompress a video with a before/after preview, convert to MP4 or WebM, crop for each network, extract the MP3 — processing runs in your browser, free.PDF toolsA free toolbox of 20 PDF tools in your browser: merge, split, compress, rotate, protect, OCR and more. No account — your files never leave your device.