Free Image Format Converter
Convert images between JPEG, PNG, WebP, BMP, TIFF, PDF, and more — entirely in your browser. Supports HEIC from iPhone, SVG, AVIF, GIF, and ICO as input. Original resolution is always preserved. No uploads, no accounts, no limits.
Everything You Need in One Converter
Built to handle the full range of real-world image conversion tasks — from quick JPEG exports to professional TIFF and PDF output.
9 Input Formats
Upload JPEG, PNG, WebP, GIF, BMP, SVG, AVIF, ICO, and HEIC/HEIF files. Covers virtually every image format you'll encounter in daily work, including iPhone photos.
6 Output Formats
Export to JPEG, PNG, WebP, BMP, TIFF, or PDF. Whether you need web-ready images, print-quality TIFFs, or PDF-embedded photos, this tool has you covered.
100% Private
Your images never leave your device. All conversion happens locally in your browser. No server upload, no account required, no data stored anywhere.
Resolution Preserved
Converts at the exact original pixel dimensions. No downscaling, no cropping, no aspect ratio changes. What goes in comes out at exactly the same size.
Batch Processing
Upload multiple images at once and convert them all in a single click. Each file is processed independently and available for individual download.
HEIC / HEIF Support
iPhone and iPad save photos in HEIC format by default. This tool loads the heic2any library client-side to decode those files without sending them anywhere.
Quality Control
Adjust JPEG and WebP output quality from 1 to 100. Lower quality means smaller file size; higher quality means crisper images. You decide the tradeoff.
Image to PDF
Embed any image directly into a PDF document. The PDF is sized to match the image dimensions, making it ideal for sharing photos in a document-friendly format.
Instant Results
No queue, no waiting for a server. Conversion starts immediately in your browser and completes in seconds, even for high-resolution images.
Who Uses This Converter?
From iPhone owners to professional designers — image format conversion is a universal need.
iPhone Users
Convert HEIC photos to JPEG or PNG so they open on Windows, Android, and software that doesn't support Apple's HEIC format.
Designers
Convert between PNG, WebP, TIFF, and other formats to match the requirements of different design tools, clients, or print workflows.
Web Developers
Convert JPEGs and PNGs to WebP for smaller file sizes and faster page loads, or batch-convert assets to match your project's format requirements.
Document Professionals
Convert images to PDF for attaching to emails, reports, or documents. Maintains full image quality inside the PDF output file.
Frequently Asked Questions
Is my image data safe? Does it get uploaded to a server?
Your images are completely safe. This tool processes everything inside your browser using the Canvas API and JavaScript. No image data is sent to any server, stored in any database, or seen by anyone else. The conversion happens entirely on your device — you can even use it offline after the page loads.
Why doesn't my HEIC file convert?
HEIC files require the heic2any library, which is loaded from a CDN when the page first opens. If you see an error, check that your internet connection is active — the library needs to download once. After that, the library runs fully client-side. If the issue persists, try refreshing the page.
Does converting an image change its resolution or dimensions?
No. This converter draws your image onto a canvas at exactly the original pixel width and height, then exports from that canvas. The output file has identical dimensions to the input. No scaling, no cropping, no padding.
What's the difference between JPEG and PNG?
JPEG uses lossy compression — it discards some image data to achieve smaller files. It's ideal for photos. PNG uses lossless compression and supports transparency. It's better for logos, screenshots, and images with sharp edges or text. When converting PNG to JPEG, any transparent areas are filled with white.
Can I convert animated GIFs?
The browser Canvas API only captures the first frame of an animated GIF. The output will be a still image of frame one. Full animated GIF conversion preserving all frames is not currently supported due to browser limitations.
What quality setting should I use for JPEG?
For most photos, 80–85 gives excellent results with significantly smaller file sizes than 100. Setting quality to 100 does NOT mean lossless — JPEG is always lossy. For web use, 70–80 is a common sweet spot. For print or archiving, use 90+. WebP at quality 80 typically produces smaller files than JPEG at 80 with similar visual quality.
When should I use TIFF format?
TIFF is the standard for print production, archival storage, and professional photography workflows. It is stored uncompressed, so it is large but retains every pixel. Use it when maximum quality and compatibility with print software matter more than file size.
What is WebP and should I use it for my website?
WebP is a modern image format developed by Google for the web. It typically produces files 25–35% smaller than JPEG at equivalent quality and supports transparency like PNG. All major modern browsers support WebP. If you are building a website, converting to WebP is one of the easiest performance wins available.
Can I use converted images for commercial purposes?
Yes. This tool only converts the format of your image — it does not add watermarks, claim ownership, or place any restrictions on your output. The converted file is entirely yours. Note that copyright of the original image content belongs to whoever created it.
How do I convert multiple images at once?
Click the upload area or drag multiple files into the drop zone. You can select many files in the file picker by holding Ctrl (Windows) or Cmd (Mac) while clicking. All uploaded images appear in the list. Select your output format, then click Convert All. Each file gets its own download button when complete.
Understanding Image Formats: A Complete Guide
Image formats are not interchangeable. Each format makes different engineering tradeoffs between file size, visual quality, transparency support, animation capability, and compatibility with different software and devices. Choosing the wrong format can mean bloated file sizes, loss of transparency, or images that simply don\u0027t open in the destination application. This guide explains what each major format does, when to use it, and why converting between formats is sometimes essential.
JPEG: The Universal Photo Format
JPEG (Joint Photographic Experts Group) is the most widely used image format in the world. It was designed specifically for photographs — images with smooth color gradients, complex textures, and subtle tonal variations. JPEG achieves small file sizes through lossy compression, which means it permanently discards some image data during encoding. At high quality settings (85\u201395), this loss is virtually invisible to the human eye. At low settings (under 50), you begin to see blocky artifacts around edges and flat color areas.
JPEG does not support transparency. If you convert a PNG with a transparent background to JPEG, those transparent areas become white. Every device, browser, email client, and image viewer in existence supports JPEG, making it the safest choice when compatibility is the priority.
PNG: Lossless Quality with Transparency
PNG (Portable Network Graphics) uses lossless compression — no image data is discarded. This makes it ideal for images that need to be edited multiple times, for screenshots, for graphics with text, for logos, and for any image where you need a transparent background (alpha channel). A PNG of a company logo with a transparent background can be placed on any colored surface without a visible white rectangle around it.
The downside of PNG is file size. A photograph saved as PNG is typically 3\u20135 times larger than the same photo as JPEG at quality 85. For web pages where bandwidth matters, this is a significant disadvantage. PNG is the right choice when quality and transparency matter more than file size.
WebP: The Modern Web Standard
WebP was developed by Google and has become the standard for web image delivery. It supports both lossy compression (like JPEG) and lossless compression (like PNG), as well as transparency and animation. In practice, WebP produces files roughly 25\u201335% smaller than JPEG at equivalent visual quality, and 15\u201325% smaller than PNG for lossless content. All major browsers — Chrome, Firefox, Safari, Edge — have supported WebP for years.
For web developers, converting existing JPEG and PNG assets to WebP is one of the highest-impact performance optimizations available. Smaller images mean faster page loads, lower bandwidth costs, and better Core Web Vitals scores.
HEIC: The iPhone Format
HEIC (High Efficiency Image Container) is the default photo format on iPhones and iPads running iOS 11 and later. It uses the HEVC codec to achieve roughly half the file size of JPEG at equivalent or better quality. A typical iPhone photo in HEIC format is 2\u20133 MB, while the same photo in JPEG would be 4\u20136 MB. Apple switched to HEIC to help users store more photos without filling storage.
The problem with HEIC is compatibility. Windows does not open HEIC files without a separately installed codec. Many online services, email clients, and older applications do not understand HEIC. For anyone who takes photos on an iPhone and needs to share them with Windows users or embed them in documents, converting to JPEG or PNG is the practical solution. This converter handles HEIC decoding entirely in your browser using the heic2any library — no upload required.
TIFF, BMP, and PDF: Specialized Use Cases
TIFF (Tagged Image File Format) is the professional standard for print production and archival photography. It supports lossless compression and very high bit depths, making it the choice of graphic designers preparing images for offset printing. The tradeoff is file size — a 24-megapixel photo can be 70 MB or more as a TIFF — but size is accepted in exchange for uncompromising quality.
BMP (Bitmap) is an older, uncompressed Windows format with near-universal support on Windows systems. It is rarely used for modern workflows but occasionally required by legacy software or industrial systems that do not understand newer formats.
PDF (Portable Document Format) is not natively an image format — it is a document format that can contain images, text, and vector graphics. Converting an image to PDF is useful when you need to email a photo as a document, add it to a PDF portfolio, or share it with someone whose system handles PDFs better than raw image files. The resulting PDF from this tool contains the image at its original dimensions and can be merged with other PDF documents using the Genvalo PDF Merge tool.