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Format fundamentals

Choose the Right Image Format

Learn when to use JPG, PNG, WebP, HEIC, SVG, or PDF, and avoid files that are too large, blurry, or hard to open.

3 min read Updated Jul 13, 2026 Reviewed guide
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Quick answer

What you need to know

Use JPG for shareable photos, PNG for transparency and sharp graphics, WebP for smaller web images, SVG for scalable artwork, HEIC for efficient phone storage, and PDF for fixed pages or documents.

Best for
Anyone choosing a file type for a website, email, phone photo, design file, print job, or document.
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Do this first

Choose a Format in Four Steps

Start with what is in the file and where it needs to work.

  1. 1

    Identify the content

    Decide whether the file is mainly a photo, a graphic with sharp edges, scalable artwork, or a document.

  2. 2

    Check what the file must keep

    Note whether you need transparency, animation, multiple pages, editable vectors, or broad compatibility.

  3. 3

    Check where it will open

    Confirm that the website, app, printer, or person receiving the file supports your chosen format.

  4. 4

    Export and inspect one sample

    Open the result at normal size and check detail, transparency, page order, and file size before converting a full batch.

01

Choose by Content Type

The image itself usually points to the best format. Photos and flat graphics need different kinds of compression.

  • Choose JPG for photos when small files and wide support matter more than transparency.
  • Choose PNG for logos, screenshots, text-heavy graphics, and images that need transparent areas.
  • Choose SVG for simple artwork that must stay sharp at any size.
02

Match the Place You Will Use It

A format can look good and still fail if the receiving app does not support it.

  • WebP can make web images smaller, but use a supported fallback where older software matters.
  • HEIC is useful for phone storage, while JPG is easier to send to mixed devices and older apps.
  • PDF is a better choice when page size, page order, or print layout must stay fixed.
03

Avoid Quality Loss During Conversion

Repeatedly saving a compressed image can soften detail. Keep the best source file and make new copies from it.

  • Resize once from the original instead of enlarging a small exported copy.
  • Do not convert a transparent image to JPG unless a white background is acceptable. JPEGConvert’s simple JPG converters place transparent pixels on white.
  • Check text, faces, gradients, and fine edges after every important export.
Quick questions

Frequently asked questions

Is JPG the same as JPEG?

Yes. JPG and JPEG use the same image format. The different extensions come from older filename limits.

Which format is best for a website?

WebP is a strong choice for many web images. JPG remains useful for widely shared photos, PNG for transparency, and SVG for simple scalable graphics.

Which formats support transparency?

PNG, WebP, and SVG can support transparency. JPG does not, so transparent areas must be filled with a color.

Should I delete the original after converting it?

Keep the original or highest-quality source. It gives you a clean starting point if you need a different size or format later.

Remember this

The short version

  • Choose a format based on the content, required features, and software that must open it.
  • Keep the original file and create separate copies for sharing, web use, and print.
  • Inspect one converted sample before processing a large group of files.
Ready to work

Open the tool you need

Pick the step that matches your file. Each tool runs in your browser.

Image Converters Choose a converter after you know the source file and the output format you need. Open tool Image Resizer Set the required pixel dimensions after you choose the output format. Open tool Compress JPG Reduce a finished JPG copy when its file size is still too large. Open tool
Keep going

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Reviewed by JPEGConvert workflow team Updated Jul 13, 2026

Compared with the current controls and output behavior of the linked JPEGConvert tools.

(function() { const title = document.querySelector('h1'); const actionRegion = document.querySelector('.action-container, .action-body'); if (!title || !actionRegion || title.querySelector('.tool-hero-mark')) return; const path = window.location.pathname.replace(/\/$/, ''); if (!path || path === '/' || path.startsWith('/converters') || path === '/about' || path === '/contact' || path === '/support' || path === '/privacy-policy') { return; } const lowerKey = path.replace(/^\/(video|audio)\//, '').replace(/^\//, '').toLowerCase(); if (!lowerKey) return; let category = 'image'; if (path.startsWith('/video/')) category = 'video'; if (path.startsWith('/audio/')) category = 'audio'; const isUtility = lowerKey.includes('ascii') || lowerKey === 'check-my-file' || lowerKey.includes('resizer') || lowerKey.includes('metadata') || lowerKey.includes('compress') || lowerKey.includes('base64') || lowerKey.includes('background') || lowerKey.includes('crop') || lowerKey.includes('watermark') || lowerKey.includes('remove-pages') || lowerKey.includes('unlock') || lowerKey.includes('protect') || lowerKey.includes('editor') || lowerKey.includes('excel') || lowerKey.includes('upscale') || lowerKey.includes('merge') || lowerKey.includes('split') || lowerKey.includes('ocr') || lowerKey.includes('sign') || lowerKey.includes('trim') || lowerKey.includes('favicon'); if (category === 'image' && isUtility) category = 'tool'; const labelMap = { jpg: 'JPG', jpeg: 'JPEG', png: 'PNG', gif: 'GIF', svg: 'SVG', pdf: 'PDF', heic: 'HEIC', jfif: 'JFIF', webp: 'WEBP', bmp: 'BMP', ico: 'ICO', word: 'DOCX', docx: 'DOCX', excel: 'Excel', xls: 'XLS', xlsx: 'Excel', mp4: 'MP4', mov: 'MOV', avi: 'AVI', mp3: 'MP3', aac: 'AAC', flac: 'FLAC', wav: 'WAV', webm: 'WEBM', cr2: 'CR2', arw: 'ARW', nef: 'NEF', raf: 'RAF' }; const formatLabel = (value) => labelMap[value] || value.toUpperCase(); function getFormatMeta(key) { if (key === 'check-my-file') { return {primary: 'Check', secondary: 'File', connector: 'dot'}; } const directMatch = key.match(/^([a-z0-9]+)-to-([a-z0-9]+)$/); const convertMatch = key.match(/^convert-([a-z0-9]+)-to-([a-z0-9]+)$/); const convertToMatch = key.match(/^convert-to-([a-z0-9]+)$/); if (directMatch) { return {primary: formatLabel(directMatch[1]), secondary: formatLabel(directMatch[2]), connector: 'arrow'}; } if (convertMatch) { return {primary: formatLabel(convertMatch[1]), secondary: formatLabel(convertMatch[2]), connector: 'arrow'}; } if (convertToMatch) { return {primary: 'Any', secondary: formatLabel(convertToMatch[1]), connector: 'arrow'}; } if (key.startsWith('compress-')) { return {primary: 'Compress', secondary: formatLabel(key.replace('compress-', '')), connector: 'dot'}; } if (key.includes('base64') && key.includes('decode')) { return {primary: 'Base64', secondary: 'Decode', connector: 'dot'}; } if (key.startsWith('base64-to-')) { return {primary: 'Base64', secondary: formatLabel(key.replace('base64-to-', '')), connector: 'arrow'}; } if (key.includes('-to-base64')) { const from = key.replace('convert-', '').replace('-to-base64', ''); return {primary: formatLabel(from), secondary: 'Base64', connector: 'arrow'}; } if (key.includes('base64')) { return {primary: 'Base64', secondary: 'Encode', connector: 'dot'}; } if (key.includes('ascii')) { return {primary: 'ASCII', secondary: 'Art', connector: 'dot'}; } if (key.includes('resizer')) { return {primary: 'Resize', secondary: 'Pixels', connector: 'dot'}; } if (key.includes('remove-pages')) { return {primary: 'Remove', secondary: 'Pages', connector: 'dot'}; } if (key.includes('crop') && key.includes('pdf')) { return {primary: 'Crop', secondary: 'PDF', connector: 'dot'}; } if (key.includes('pdf-editor')) { return {primary: 'Edit', secondary: 'PDF', connector: 'dot'}; } if (key.includes('unlock')) { return {primary: 'Unlock', secondary: 'PDF', connector: 'dot'}; } if (key.includes('protect')) { return {primary: 'Protect', secondary: 'PDF', connector: 'dot'}; } if (key.includes('pdf') && key.includes('metadata')) { return {primary: 'Clean', secondary: 'Metadata', connector: 'dot'}; } if (key.includes('metadata')) { return {primary: 'EXIF', secondary: 'Clean', connector: 'dot'}; } if (key.includes('background')) { return {primary: 'Remove', secondary: 'Background', connector: 'dot'}; } if (key.includes('crop')) { return {primary: 'Crop', secondary: 'Image', connector: 'dot'}; } if (key.includes('watermark')) { return {primary: 'Watermark', secondary: 'Image', connector: 'dot'}; } if (key.includes('upscale')) { return {primary: 'Upscale', secondary: 'Image', connector: 'dot'}; } if (key.includes('merge')) { return {primary: 'Merge', secondary: 'PDF', connector: 'dot'}; } if (key.includes('split')) { return {primary: 'Split', secondary: 'PDF', connector: 'dot'}; } if (key.includes('ocr')) { return {primary: 'OCR', secondary: 'PDF', connector: 'dot'}; } if (key.includes('sign')) { return {primary: 'Sign', secondary: 'PDF', connector: 'dot'}; } if (key.includes('trim')) { return {primary: 'Trim', secondary: 'Video', connector: 'dot'}; } return {primary: 'Tool', secondary: '', connector: 'dot'}; } function getIconClass(key, categoryName) { const toFormat = key.split('-to-')[1]; if (key === 'check-my-file') return 'bi-file-earmark-check'; if (key.includes('ascii')) return 'bi-textarea-t'; if (key.includes('resizer')) return 'bi-aspect-ratio'; if (key.includes('metadata')) return 'bi-shield-slash'; if (key.includes('compress')) return 'bi-file-earmark-zip'; if (key.includes('base64')) return 'bi-journal-code'; if (key.includes('background')) return 'bi-scissors'; if (key.includes('crop')) return 'bi-crop'; if (key.includes('watermark')) return 'bi-type'; if (key.includes('remove-pages')) return 'bi-trash'; if (key.includes('unlock')) return 'bi-unlock'; if (key.includes('protect')) return 'bi-lock'; if (key.includes('editor')) return 'bi-pencil-square'; if (key.includes('excel')) return 'bi-file-earmark-spreadsheet'; if (key.includes('upscale')) return 'bi-arrows-angle-expand'; if (key.includes('merge')) return 'bi-files'; if (key.includes('split')) return 'bi-scissors'; if (key.includes('ocr')) return 'bi-file-earmark-text'; if (key.includes('sign')) return 'bi-pen'; if (key.includes('trim')) return 'bi-scissors'; if (toFormat) { switch (toFormat) { case 'jpg': case 'jpeg': return 'bi-filetype-jpg'; case 'png': return 'bi-filetype-png'; case 'gif': return 'bi-filetype-gif'; case 'svg': return 'bi-filetype-svg'; case 'pdf': return 'bi-filetype-pdf'; case 'word': case 'docx': return 'bi-file-earmark-word'; case 'xls': case 'xlsx': case 'excel': return 'bi-file-earmark-spreadsheet'; case 'heic': return 'bi-filetype-heic'; case 'webp': return 'bi-filetype-webp'; case 'bmp': return 'bi-filetype-bmp'; case 'ico': return 'bi-file-image'; case 'mp4': return 'bi-filetype-mp4'; case 'mov': return 'bi-filetype-mov'; case 'mp3': return 'bi-filetype-mp3'; case 'wav': return 'bi-filetype-wav'; case 'avi': return 'bi-filetype-avi'; default: return 'bi-file-earmark-image'; } } if (categoryName === 'video') return 'bi-film'; if (categoryName === 'audio') return 'bi-music-note-beamed'; if (categoryName === 'image') return 'bi-file-earmark-image'; return 'bi-gear'; } const formatMeta = getFormatMeta(lowerKey); const connectorIcon = formatMeta.connector === 'arrow' ? 'bi-arrow-right-short' : 'bi-dot'; const iconClass = getIconClass(lowerKey, category); const mark = document.createElement('span'); mark.className = `tool-hero-mark converter-mark converter-mark--${category}`; const iconWrap = document.createElement('span'); iconWrap.className = 'converter-mark__icon'; const icon = document.createElement('i'); icon.className = iconClass; iconWrap.appendChild(icon); mark.appendChild(iconWrap); const formatWrap = document.createElement('span'); formatWrap.className = 'converter-format'; const primary = document.createElement('span'); primary.className = 'format-pill'; primary.textContent = formatMeta.primary; formatWrap.appendChild(primary); if (formatMeta.secondary) { const connector = document.createElement('span'); connector.className = 'format-connector'; const connectorIconEl = document.createElement('i'); connectorIconEl.className = connectorIcon; connector.appendChild(connectorIconEl); formatWrap.appendChild(connector); const secondary = document.createElement('span'); secondary.className = 'format-pill format-pill--secondary'; secondary.textContent = formatMeta.secondary; formatWrap.appendChild(secondary); } mark.appendChild(formatWrap); title.classList.add('tool-hero-title'); title.prepend(mark); })();