Image Tools
Resize, re-encode, and convert supported static raster images locally in your browser.
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Featured calculators
Common starting points in image tools, chosen from the tools already available in this category.
Image Resizer
Change bounded static raster pixel dimensions with an optional aspect-ratio lock.
Image Compressor
Re-encode one static raster as JPEG or WebP without guaranteeing a smaller file.
Image to Base64
Encode validated original JPEG, PNG, or WebP bytes as a Data URL or raw Base64.
Base64 to Image
Strictly decode canonical Base64 into a validated static JPEG, PNG, or WebP image.
Popular workflows
Useful paths through this category
Follow a short workflow when one calculator naturally leads to another.
Image prep path
Resize first, compress next, then convert only if your workflow needs Base64.
Category note
Review downloaded or converted files before sharing, especially when images contain personal or sensitive information.
Related Guides
Practical guides that support the tools in this category.
What this category helps with
Resize, compress, and convert image-related data for sharing, uploads, websites, and development workflows.
Common tasks
- Resize images to bounded pixel dimensions.
- Re-encode images with explicit format and quality settings.
- Convert validated images to or from Base64.
- Review local previews before downloading or copying output.
Why Calzivo makes it easier
Image tools keep common file tasks simple in the browser while reminding users to review output before publishing or sharing.
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Estimate BMI, calories, fertility dates, and common health-planning metrics.
Date & Time Calculators
Calculate date differences, durations, workdays, hours, and time-zone conversions for schedules and planning.
Frequently Asked Questions
Questions about image resizing, compression, Base64 image conversion, and file handling.