String Replace

Eden_StringReplace is the plain-language cousin of the pack's Eden_Regex_Replace. Where the regex node asks you to think in patterns and capture groups, this one does a literal find-and-replace: take input_string, swap every occurrence of target_text for replace_with, hand you back the result. No pattern language, no metacharacters, no surprises.

Its official description: "Replaces all occurrences of target text with replacement text in the input string." It's part of eden_comfy_pipelines, Eden.art's 70+ node suite.

The three inputs

• input_string - the text to edit (multiline, so whole prompts work).
• target_text - the exact substring to find. Exact matters: "cat" matches "cat" inside "concatenate" too, because this is a literal substring match, not a whole-word match. If you need word boundaries or wildcards, that's what the regex node is for.
• replace_with - what replaces it. Leave empty to delete.

One output, STRING, the edited text.

The useful details

Because it's a literal str.replace, the behavior is dead simple and that's the appeal: nothing is escaped, nothing is interpreted. Looking for "a.b"? It matches the literal characters a.b, not "an a, any char, a b" like it would in regex. That predictability makes it the right tool for most real cleanup jobs:

• Swapping a token in a prompt template: replace {{subject}} with your actual subject.
• Normalizing a filename across a batch: " - " → "_".
• Scrubbing a string before you hash it or log it: remove quotes, drop line breaks.

The one gotcha is that it replaces every occurrence - there's no "first match only" control. For that, or for anything with patterns, walk over to Eden_Regex_Replace, which lives in the same pack and gives you max_n_replacements and case-sensitivity toggles. The two nodes are meant to be a matched set: literal when you don't need to think, regex when you do.

Why it's in the Eden pack

Eden_StringReplace is one of those unglamorous utility nodes that makes the pack's bigger string machinery work. It plugs directly into the pattern of driving everything from a single editable string - replace a token upstream, and every downstream node (prompts, filenames, GPT calls) updates. It's also a handy inline text scrubber when you're building filenames out of prompts and need to strip characters your filesystem hates.

Installing it

Standard pack install - ComfyUI Manager (search "eden"), or:

cd ComfyUI/custom_nodes
git clone https://github.com/edenartlab/eden_comfy_pipelines.git
cd eden_comfy_pipelines
pip install -r requirements.txt

Restart ComfyUI. No models, no keys, no downloads - it's a string function wearing a node costume, and it does its one job cleanly.