How to use layers without flattening a photo too early

You may be happy with a photo edit now, but still want to change the text, undo a retouch, or try a different color later. Flattening too soon combines layers into one image, making those separate edits much harder to change.

Work in stages instead: protect the original, keep different kinds of edits on separate layers, and export a flattened copy only when you need a finished image. You can follow this workflow in TooLab’s Photo Editor, which supports layers, brushes, selections, text, adjustments, and filters.

Edit the photo while keeping its layers

1. Open the Photo Editor and open the photo you want to edit. Keep an unchanged copy of the original file somewhere safe before you start.
2. Keep the original image layer untouched. If the editor lets you duplicate a layer, make a copy and use that for edits that change pixels, such as painting or retouching. If you cannot duplicate it, add a separate layer for new paint or other additions instead.
3. Put different kinds of work on separate layers. Keep retouching, drawn marks, and text apart so you can revise or remove one without changing the others.
4. Use a selection when an edit should affect only part of the photo. For example, select a region before painting or applying an adjustment, then check the result at normal viewing size as well as close up.
5. Review the layer stack before finishing. Hide and show layers one at a time to check what each contributes. Save an editable version if the editor offers a project format, then export a flattened copy for sharing or printing.

Do not flatten just to see how the finished image looks. You can usually judge the composite by viewing all the layers together. Flatten only when you no longer need to edit the separate parts, or when a particular file format or destination requires a single image.

Choose what belongs on its own layer

Retouching and painted changes

Keep new brush strokes separate from the original photo when possible. If you are removing a small mark or adding a painted detail, a separate layer makes it easier to erase that work without restoring the whole image. For retouching tools that change the photo directly, work on a duplicate rather than the only original layer.

Text and graphic elements

Keep text separate from the photograph. You can then revise the wording, position, or appearance without painting over the image or rebuilding the text. If you add several unrelated labels or graphic elements, separate layers make individual changes easier.

Color and lighting changes

Adjustments and filters can change the look of the entire image or a selected area. Before applying one, check whether it affects a separate layer or changes the pixels on the current layer. If the effect is destructive, duplicate the image first or keep a version from before the adjustment. A separate layer by itself does not guarantee that every filter is reversible.

What flattening is useful for

Flattening combines visible layers into a single image. It can simplify a finished file, reduce editing complexity, or meet a format requirement. The tradeoff is that the individual text, retouching, and image elements are no longer separate in that flattened result. Keep an editable version if you might need to make changes later.

If you flattened the photo too early

1. Undo the flattening if the edit is still open. Use the editor’s undo history to step back to the point before the layers were combined. Check that the individual layers have returned before continuing.
2. Reopen an editable copy. If you saved a project version before flattening, open it and continue there. Do not overwrite it with the flattened image.
3. Start again from the original file. If all you have is a flattened export, the separate layer data is not contained in that image. Reopen the unchanged original and repeat the edits on separate layers. You may be able to reuse the flattened image as a visual reference, but its text and retouching cannot be separated perfectly just by reopening it.
4. Keep both versions from now on. Give the editable project and final image different names, such as portrait-working and portrait-final. This makes it less likely that you will replace the version you still need to edit.

Keep a safe working copy

A useful habit is to save or preserve a checkpoint before a major change, such as a strong filter, extensive retouching, or a crop you may want to reconsider. If the editor provides a layered project format, use it for the editable version. If it does not, retain the original photo and avoid closing the editing session until you have exported the version you need.

The Photo Editor runs in your browser. Photos and files you open stay on your device, and nothing you edit is uploaded.