JPEGConvert.com
Private by design. Processed in your browser on your device. No account required. How it works

Image Upscaler

Enlarge JPG or PNG images for print, listings, and social layouts. Choose a scale or target width, compare the original and resized result, and remember that resizing cannot create missing detail.
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Image Resizer Compress JPG Remove Background Watermark Image Guide: Image format decisions
Tip: press Ctrl/Cmd + K to search all tools.
Image upscale
Choose a file to start
Upload a JPG or PNG, pick a larger size, and compare the original and upscaled result side by side before you download it.
  • 2x and 4x are the fastest starting points for most images.
  • Use advanced options only when you need a custom size or quality setting.
  • The right panel explains what changed and keeps the download action near the preview.
{{ imageFile.name }}
Original: {{ originalDimensions }}
File size: {{ formatSize(originalSize) }}
Advanced options Use custom presets or a target width only when 2x or 4x is not the right fit.
More presets
Custom size
Output size: {{ scaledDimensions }} ({{ scaleLabel }})
{{ warningMessage }}
Processing {{ progress.toFixed(0) }}%
{{ errorMessage }}
Result panel
Your comparison preview appears here
After upload, this panel shows the original image, the upscaled result, and a short summary of what changed.
  • Compare the original and upscaled versions side by side.
  • If the preview still looks similar, download the file and zoom in on fine detail.
  • The download action stays in the preview header once processing is complete.
Working
Upscaling image
Building the larger image with your current scale and format settings.
{{ progress.toFixed(0) }}%
Upscale note
{{ hasError ? 'We could not finish this upscale' : 'Large images may take longer' }}
{{ hasError ? 'Try a smaller scale or upload another image.' : warningMessage }}
How to read the preview
  • Upscaling adds pixels for larger prints and tighter crops; settings live on the left and the preview updates automatically.
  • The preview is scaled down, so if it looks similar, download the upscaled image and zoom in to compare fine detail.
What's changed
  • {{ line }}
Original: {{ originalDimensions }} · {{ formatSize(originalSize) }}
Upscaled: {{ scaledDimensions }} · {{ formatSize(result.size) }}
Upscaled: {{ scaledDimensions }} · waiting for output
Upscale summary
Review the upscaled image before download
{{ result ? 'The upscaled image is ready in this panel.' : 'Choose a scale on the left, compare the two previews here, and download the upscaled image from this panel.' }}
  • Original: {{ originalDimensions }} · {{ formatSize(originalSize) }}
  • Upscaled: {{ result ? scaledDimensions + " · " + formatSize(result.size) : scaledDimensions + " expected" }}
  • Output format: {{ outputFormatLabel }}
Preview
Upscaling · {{ progress.toFixed(0) }}%
Original
Original preview
{{ originalDimensions }} · {{ formatSize(originalSize) }}
Upscaled
Upscaled preview
Upscaled preview will appear here after processing.
{{ scaledDimensions }} · {{ formatSize(result.size) }}
Expected size: {{ scaledDimensions }}

How to Upscale a Photo

Choose an image and pick a size

Choose a JPG or PNG, pick 2x/4x or open Advanced for a custom size.

Compare and download

Review the side-by-side preview and download when ready.

Flexible size options

Pick 2x or 4x quickly, or open Advanced for 1.25x, 1.5x, 3x, and custom sizes.

Clear before/after previews

Compare original vs upscaled with side-by-side, slider, or single-view modes.

Target width option

Set a custom width in pixels when you need a specific size for a platform.

JPG quality control

Tune JPEG output quality to balance sharpness and file size.

PNG transparency support

Keep transparent backgrounds when exporting to PNG.

Private by default

Upscaling runs in your browser so your files stay on your device.

Download when ready

Download the upscaled image when processing is complete.

Frequently Asked Questions

Upscale when a photo looks pixelated at larger sizes, when you need higher resolution for print, or when a platform requires a minimum width.

Use 2x for web and social, 4x for print or large displays, or open Advanced if you need a specific size.

Yes. Open Advanced scale to choose 1.25x, 1.5x, 3x, or enter a custom percent or target width.

This tool uses high-quality resizing to enlarge images while keeping edges smooth. AI-enhanced upscaling may be added later.

Upload JPG or PNG images. Export the upscaled result as JPG or PNG.

Upscaling increases pixel dimensions, so the file size usually grows along with it.

No. Everything runs in your browser on your device for privacy.

Yes, but very large images may take longer to process on mobile devices.

Need a hand with your file?

JPEGConvert.com keeps the workflow simple: upload, convert, and download. For the best results, start with the highest-quality source file you have.

About the team | Contact support

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} 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'; 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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' ? 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