| HEIC file is rejected | The selected workflow may not accept the HEIC variant. | Verify the input is a valid HEIC and consult the converter’s supported types. |
| Could not decode image | The browser or conversion decoder lacks codec support. | Try a supported browser or trusted native photo export. |
| File extension changes but image does not open | The image was renamed without re-encoding. | Run actual conversion and check that the file is JPEG. |
| Converted JPG appears sideways | Orientation metadata may be interpreted or rewritten differently. | Rotate the result using a trusted editor and verify it displays upright. |
| Colours appear washed out | Wide colour or HDR may have been converted to SDR incorrectly. | Review output colour handling and compare on the intended display. |
| JPG has unexpected oversaturation | Colour profiles may be mishandled or ignored. | Compare in a colour-managed app and choose a suitable output profile if offered. |
| Highlights lose detail | HDR tone mapping can clip bright image regions. | Use a compatible export path with appropriate tone mapping. |
| JPG is much larger than HEIC | JPEG can require more bytes than efficient HEIC encoding. | Use suitable quality and dimensions, checking visible quality before lowering settings. |
| Output looks blurry | Lossy compression or resizing may reduce sharpness. | Use a higher quality setting if present and retain original resolution. |
| Small text looks blocky | JPEG compression damages hard edges and fine characters. | Choose better export quality or a lossless format where appropriate. |
| Converted file will not upload | The destination may impose size, dimension or other constraints. | Check the uploader requirements and confirm the file is valid JPEG. |
| Conversion stalls | The image may be large or resources limited. | Try one smaller file at a time and close memory-heavy tabs. |
| Several photos have identical names | Export naming can cause accidental overwriting. | Use distinct filenames and review the destination folder. |
| GPS information is still present | Conversion may preserve EXIF metadata. | Strip the location metadata and independently inspect the output. |
| Capture date disappeared | The converter may discard metadata. | Keep original HEIC files and restore dates only from trustworthy records. |
| Live Photo animation is gone | JPEG stores a still picture rather than a motion sequence. | Export the motion component separately through a supported media workflow. |
| Portrait depth effect is not editable | JPEG may omit HEIC auxiliary depth data. | Keep the original if you need depth-based edits. |
| Transparent area becomes solid | JPEG cannot encode alpha transparency. | Use a transparency-capable format when alpha is required. |
| Image appears cropped | The exporter may have transformed orientation or dimensions. | Compare full boundaries with the source and re-export without unwanted cropping. |
| Some HEIC files work and others fail | HEIC profiles and file structures are not identical. | Inspect problematic files and use a decoder that supports their specific encoding. |
| A partially downloaded file fails | The source may be truncated or corrupted. | Retrieve a complete original from the device or cloud backup. |
| Older app reports unsupported JPG | The output may have an unexpected colour profile or encoding option. | Try a broadly compatible baseline JPEG export. |
| My photos are sensitive | The conversion service data flow is not verified. | Review privacy terms and avoid submitting confidential files until acceptable. |
| Pixel dimensions changed | The conversion may include an implicit resize. | Compare width and height and select original dimensions if available. |
| Download is missing | Browser download permissions or session errors can block output. | Check the browser downloads panel and retry the supported action. |
| HEIC is not shown in file picker | The picker may filter permitted input types. | Confirm supported formats in the tool and avoid forcing an unsupported file. |
| A web page loads the JPG slowly | Image dimensions or compression may be unsuitable for web delivery. | Resize appropriately and optimize the final asset for its actual display size. |