FileNestCalm file work
5 free successful conversions every 24 hours

Image Batch Converter

Convert up to three images into one consistent format. Processing stays in your browser, and only successful files count toward the daily quota.

Start using this tool
File contents stay local Review first, then run
DATA HANDLING BEFORE YOU STARTCore processing stays in this browser; signed-in features store service metadata such as account, quota and jobs, not copies of your work files.
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STEP 01Add files

Choose images; free or Pro limits are checked immediately.

STEP 02Choose settings

Set format, ratio, zoom and enhancement with the exact credit cost shown.

STEP 03Review & download

Inspect dimensions, bytes and warnings, then download individually or as a ZIP.

FREE + PROStart free and upgrade when the workload grows.Free: 5 conversions per rolling 24 hours, 25 MB/file and 3/batch. Pro: 300 per 30 days, 50 MB/file and currently 50/batch, plus advanced naming, templates and priority processing.
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DATA HANDLING DETAILSOpen the full data boundary when you want the implementation details.
Full data handling matrix
Processed in this browserCore file processing runs on this device; the work files do not need to be uploaded to FileNest first.
File contents are not uploadedWork files stay on this device for this tool; outputs are generated or downloaded within the browser workflow.
Service metadata ≠ file copiesSigned-in features may store account, quota, job, download or saved-rule records; those records do not contain copies of your work files.
Practical use cases

Less mechanical sorting, more focus

Website upload

Turn PNG or JPG files into smaller WebP assets.

Transparent graphics

Standardize suitable assets as PNG.

Photo sharing

Convert images to widely compatible JPG and choose the output quality.

FAQ

Questions before you begin

When does the free quota return?

Each successful file drops out of the count 24 hours later. You do not need to wait until midnight.

Do failed files use quota?

No. A file counts only after the browser successfully creates its result.

Are images uploaded?

No. Conversion, crop and compression run in this browser. Use the separate local image OCR tool when you need to extract text.

COMMON TASKS

Batch convert JPG, PNG and WebP image formats

Use the existing image workspace when a set of files needs one consistent output format. Add the batch, choose JPG, PNG or WebP, review quality and generated files, then download without uploading the source images.

PNG to JPG: check transparency first

Use JPG when transparency is not required. Preview the result before batch download so transparent PNG backgrounds do not become an unexpected output.

JPG to WebP for web delivery

Convert suitable JPG website assets to WebP in one batch, then inspect the generated file size and visual result rather than relying on a promised saving percentage.

WebP to PNG when a PNG workflow requires it

Convert WebP files to PNG when downstream software or delivery rules require PNG. Format conversion does not create image detail that was absent from the source.

Batch image format workflow: inspect source needs such as PNG transparency, choose JPG, PNG or WebP output, then review generated file size and appearance.
Illustrative workflow: choose the output format for the real task and inspect the result. No fixed compression saving is promised; this is not a live conversion screenshot.
Tests & product evidence

What evidence supports this workflow?

Only evidence directly relevant to this tool is listed below, with its testing or disclosure boundaries.

Preview-First Batch Safety Evidence

Review production behavior for preflight previews, collision and unsafe-name blocking, original-file protection and image-batch de-duplication.

View evidence
File Processing Privacy Matrix

Check whether current working-file contents stay browser-local or use an explicitly disclosed transient-cloud path.

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Browse all tests & evidence