diff --git a/inc/thorvg.h b/inc/thorvg.h
index a8f1f829..56101a4b 100644
--- a/inc/thorvg.h
+++ b/inc/thorvg.h
@@ -343,6 +343,21 @@ public:
      */
     Result composite(std::unique_ptr<Paint> target, CompositeMethod method) noexcept;
 
+    /**
+     * @brief Gets the bounding box of the paint object before any transformation.
+     *
+     * @param[out] x The x coordinate of the upper left corner of the object.
+     * @param[out] y The y coordinate of the upper left corner of the object.
+     * @param[out] w The width of the object.
+     * @param[out] h The height of the object.
+     *
+     * @return Result::Success when succeed, Result::InsufficientCondition otherwise.
+     *
+     * @note The bounding box doesn't indicate the final rendered region. It's the smallest rectangle that encloses the object.
+     * @see Paint::bounds(float* x, float* y, float* w, float* h, bool transformed);
+     */
+    TVG_DEPRECATED Result bounds(float* x, float* y, float* w, float* h) const noexcept;
+
     /**
      * @brief Gets the axis-aligned bounding box of the paint object.
      *
@@ -1153,6 +1168,24 @@ public:
      */
     Result load(const std::string& path) noexcept;
 
+    /**
+     * @brief Loads a picture data from a memory block of a given size.
+     *
+     * @param[in] data A pointer to a memory location where the content of the picture file is stored.
+     * @param[in] size The size in bytes of the memory occupied by the @p data.
+     * @param[in] copy Decides whether the data should be copied into the engine local buffer.
+     *
+     * @retval Result::Success When succeed.
+     * @retval Result::InvalidArguments In case no data are provided or the @p size is zero or less.
+     * @retval Result::NonSupport When trying to load a file with an unknown extension.
+     * @retval Result::Unknown If an error occurs at a later stage.
+     *
+     * @warning: you have responsibility to release the @p data memory if the @p copy is true
+     * @deprecated Use load(const char* data, uint32_t size, const std::string& mimeType, bool copy) instead.
+     * @see Result load(const char* data, uint32_t size, const std::string& mimeType, bool copy = false) noexcept
+     */
+    TVG_DEPRECATED Result load(const char* data, uint32_t size, bool copy = false) noexcept;
+
     /**
      * @brief Loads a picture data from a memory block of a given size.
      *
diff --git a/src/lib/tvgPaint.cpp b/src/lib/tvgPaint.cpp
index 450a221d..a2685b33 100644
--- a/src/lib/tvgPaint.cpp
+++ b/src/lib/tvgPaint.cpp
@@ -356,6 +356,12 @@ Matrix Paint::transform() noexcept
 }
 
 
+TVG_DEPRECATED Result Paint::bounds(float* x, float* y, float* w, float* h) const noexcept
+{
+    return this->bounds(x, y, w, h, false);
+}
+
+
 Result Paint::bounds(float* x, float* y, float* w, float* h, bool transform) const noexcept
 {
     if (pImpl->bounds(x, y, w, h, transform)) return Result::Success;
diff --git a/src/lib/tvgPicture.cpp b/src/lib/tvgPicture.cpp
index 7de38b2c..fd324a94 100644
--- a/src/lib/tvgPicture.cpp
+++ b/src/lib/tvgPicture.cpp
@@ -67,6 +67,12 @@ Result Picture::load(const char* data, uint32_t size, const string& mimeType, bo
 }
 
 
+TVG_DEPRECATED Result Picture::load(const char* data, uint32_t size, bool copy) noexcept
+{
+    return load(data, size, "", copy);
+}
+
+
 Result Picture::load(uint32_t* data, uint32_t w, uint32_t h, bool copy) noexcept
 {
     if (!data || w <= 0 || h <= 0) return Result::InvalidArguments;