Inspect unknown extensions, preview hidden data, and repair slightly corrupted files. This sandbox tool reads and processes files locally inside your browser for absolute safety and data privacy.
Supports PDF, ZIP, DOCX, XLSX, PNG, JPG, TXT, or unknown files
Have you ever tried opening a file only to receive a frustrating "File is corrupted or damaged" message? Our online File Opener & Repair Tool is built to help you preview, analyze, and recover textual content from damaged or unsupported files. Designed to work 100% client-side, this tool parses uploaded binary files locally. It extracts standard headers (such as PDF metadata or ZIP file directories) and offers a raw text recovery mode to pull readable ASCII characters from corrupted spreadsheets, documents, or data dumps. Safely inspect files without risking security or database uploads.
Automatically analyzes file signatures and magic bytes to identify the true format, even if the extension was changed.
Scans and parses directory lists of compressed archives (ZIP, DOCX, XLSX) to show lists of contents.
Attempts to repair minor byte issues and extracts clean, printable ASCII characters from unreadable data formats.
Inspect unknown files securely inside your browser. No files are uploaded to our servers, keeping you protected from virus execution.
Extract raw research notes or text content from Microsoft Word or spreadsheet files that refuse to open.
Analyze the binary header properties and metadata of files with mysterious, missing, or renamed extensions.
Read and recover directory index structures from corrupted ZIP files to identify missing file names.
While it cannot recreate overwritten binary blocks, it is highly successful at extracting intact text portions, listing ZIP archives, and repairing slightly broken headers.
Yes. Since the parsing is processed strictly in JavaScript within a client-side sandbox, malicious code cannot execute on your computer or our servers.
We support previewing text formats (TXT, MD, CSV, HTML, JSON), images (PNG, JPG, WebP), and parsing header data of PDFs, ZIPs, DOCX, and XLSX files.
Explore Related Categories
Explore our other free interactive web utilities. No login, no payments, always free.
Generate realistic fake chat screenshots for WhatsApp, Messenger, and Instagram instantly.
Use ToolAnalyze name characters to find core strengths, archetypes, and soul colors.
Use ToolCreate custom multiple-choice quizzes and share the generated links with your audience.
Use ToolTest your logic, cognitive capabilities, and spatial awareness with a quick IQ check.
Use ToolGenerate a free, mobile-optimized landing page for all your social media links.
Use ToolCalculate your love compatibility percentage and relationship chemistry between two names instantly.
Use ToolCreate custom WhatsApp chat links with pre-filled messages and instant QR code sharing.
Use ToolGenerate free customized, downloadable QR codes for URLs, WiFi, texts, and WhatsApp.
Use ToolCheck word count, character density, sentences, paragraphs, and reading time in real-time.
Use ToolGenerate highly secure, random passwords and passphrases offline to keep your accounts safe.
Use ToolCalculate your monthly loan EMIs, interest details, and view your amortization summary instantly.
Use ToolConvert text to spoken audio instantly. Choose natural voices, adjust speed/pitch, and listen for free.
Use ToolCalculate your Body Mass Index (BMI) and check your health classification range and recommendations.
Use ToolReduce your image file size locally without losing quality. Compress PNG, JPG, and WebP formats.
Use ToolEncode text or files into Base64 format, or decode Base64 data back to readable text offline.
Use ToolCreate hilarious custom memes instantly. Upload your image, add captions with text customization, and download free.
Use ToolCalculate your semester and cumulative GPA easily. Supports custom credits, letter grades, and percentage weights.
Use ToolSpin the custom wheel to make fast, unbiased decisions. Enter names or choices, customize slices, and spin.
Use ToolScan and read QR codes instantly using your device camera or image uploads. Runs 100% locally in your browser.
Use ToolCompute final prices, percentage savings, and sales tax in real-time with an interactive savings breakdown.
Use ToolCreate beautiful, custom online surveys and forms. Collect unlimited responses and view live analytics dashboard.
Use ToolConvert your typed text or assignments into realistic handwritten documents. Export as PDF or image.
Use ToolConvert text between UPPERCASE, lowercase, Title Case, Sentence Case, camelCase, and slugify formats instantly.
Use ToolCalculate percentage increases, decreases, fractions, and values instantly with dynamic sliders.
Use ToolFormat, validate, beautify, and minify JSON data instantly with live error highlights.
Use ToolCompare two text blocks side-by-side or inline to highlight additions, deletions, and differences.
Use ToolGenerate Google Analytics campaign tracking URLs with custom campaign, medium, and source parameters.
Use ToolConvert PDF, Word, images, and audios locally. Supports converting formats like WebP, PNG, JPG, and documents.
Use ToolBuild ATS-friendly, professional resumes online. Input your details and print or save as PDF instantly.
Use ToolBuild your auto-fill profiles, save data locally, and copy details instantly to fill online forms faster.
Use ToolAnalyze website SEO tags, load speed, page size, resources, and broken links with actionable improvements.
Use ToolConvert simple ideas into rich, effective prompts for ChatGPT, Gemini, and Claude instantly.
Use ToolGenerate viral titles, descriptions, and tags optimized for YouTube search ranking.
Use ToolRemove backgrounds from images instantly in your browser using client-side AI.
Use ToolMinify or beautify/format CSS and JSON code instantly for optimized performance.
Use ToolConvert dates and times across global zones, manage remote team meetings, and schedule events easily.
Use Tool